A swimmer push water backward give reason

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Answer 1

To move forward he has to push the water back and because of Newtons third law of motion, every action has a equal and opposite reaction, so the force he uses to push the water is how much he moves forward.


Related Questions

A sales associate was issued a citation for failing to timely notify the Commission of her change of address. How many days does the licensee have to either pay the citation or file an objection to the alleged violation

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The sales associate has 20 days to either pay the citation or file an objection to the alleged violation.

When a sales associate is issued a citation for failing to timely notify the Commission of a change of address, they are given a specific period of time to respond. In this case, the timeframe for the response is 20 days. Within these 20 days, the sales associate must make a decision whether to pay the citation or contest the alleged violation by filing an objection.

It is important for the sales associate to adhere to this timeline and take appropriate action within the given 20-day period to avoid any further consequences or penalties.

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If you were making a scale model of Earth representing our planet by a 12-inch basketball, the inner core would be about the size of...

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Answer:

2.298 inches

Explanation:

The hypotenuse of a right triangle is 6 inches longer than the shorter leg. The longer leg is 3 inches longer than the shorter leg. Find the length of the shorter leg.

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The hypotenuse of a right triangle is 6 inches longer than the shorter leg: The length of the shorter leg of the right triangle is 3 inches.

What is hypotenuse?

In geometry, the hypotenuse is the longest side of a right triangle. A right triangle is a triangle that has one angle measuring 90 degrees (a right angle). The hypotenuse is the side opposite the right angle.

The hypotenuse is the side that connects the two other sides of the right triangle, known as the legs. The lengths of the legs are often denoted as "a" and "b," and the length of the hypotenuse is denoted as "c."

The relationship between the lengths of the sides of a right triangle is given by the Pythagorean theorem, which states that the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the two legs: c² = a² + b²

Let's assume that the shorter leg of the right triangle is represented by "x" inches.

According to the given information, the hypotenuse of the right triangle is 6 inches longer than the shorter leg. Therefore, the length of the hypotenuse can be expressed as "x + 6" inches.

The longer leg is 3 inches longer than the shorter leg. So, the length of the longer leg can be represented as "x + 3" inches.

By applying the Pythagorean theorem, which states that the square of the hypotenuse is equal to the sum of the squares of the other two sides, we can set up the equation: x² + (x + 3)² = (x + 6)²

Simplifying the equation x² + x² + 6x + 9 = x²+ 12x + 36

x² - 6x - 27 = 0. Factoring the quadratic equation: (x - 9)(x + 3) = 0

Setting each factor equal to zero: x - 9 = 0 or x + 3 = 0. Solving for x: x = 9 or x = -3

Since length cannot be negative, we take the positive value, which is x = 9. Therefore, the length of the shorter leg is 9 inches.

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What state shares a southern border with long island sound?.

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Long Island Sound borders southern Connecticut. Long Island Sound is a tidal estuary between Long Island, New York, and southern Connecticut. It links Connecticut and New York ports to the Atlantic Ocean.

Long Island Sound shapes Connecticut's southern shoreline, providing beaches, coastal communities, and recreation. Marine life, commercial and recreational fishing, and maritime activities depend on the Sound.

Long Island Sound moderates Connecticut's climate and precipitation. The Sound offers boating, sailing, fishing, and other watersports for tourists.

Connecticut shares Long Island Sound's southern boundary, generating a vibrant coastal environment that enriches the region's cultural, economic, and natural history.

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An icy sidewalk gradually loses its ice even when the weather stays cold. Where does the ice go?

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When an icy sidewalk gradually loses its ice, it is primarily due to a process called sublimation.

Sublimation occurs when a solid directly converts into a gas without passing through the liquid phase. In the case of ice, it sublimes and transforms into water vapor.

Even in cold weather, the air contains moisture in the form of water vapor. The process of sublimation happens when the water molecules at the surface of the ice gain enough energy to break free from the solid structure and become vapor. This occurs because the surrounding air has a lower vapor pressure compared to the ice surface.

The rate of sublimation depends on several factors, including temperature, humidity, air movement, and surface area. In cold weather, the temperature difference between the ice and the surrounding air provides the necessary energy for the sublimation process. The ice molecules gain energy from the surroundings, causing them to transition directly into water vapor.

As the sublimation process continues, the icy surface gradually diminishes as more and more ice molecules are converted into water vapor. However, it is important to note that sublimation is a slow process and may take time to be visibly noticeable.

In summary, the ice on an icy sidewalk gradually disappears through the process of sublimation, where the ice converts directly into water vapor without passing through the liquid phase. The sublimation occurs due to the temperature difference and vapor pressure between the ice surface and the surrounding air.

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Find the mass of an element with two isotopes, the first of which makes up 75% of the element and has a mass number of 64 and the second , which makes up 25% of the elements and has a mass number 65.

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The mass of an element with two isotopes, the first of which makes up 75% of the element and has a mass number of 64 and the second , which makes up 25% of the elements and has a mass number 65 is 64.25 atomic mass units (u).

To find the mass of the element with two isotopes, we can use the weighted average mass formula.

Convert the percentages to decimal form:

   The first isotope makes up 75% of the element, so its decimal form is 0.75.

   The second isotope makes up 25% of the element, so its decimal form is 0.25.

Multiply the mass number of each isotope by its respective percentage:

   For the first isotope (mass number 64): 64 * 0.75 = 48.

   For the second isotope (mass number 65): 65 * 0.25 = 16.25.

Add the results from Step 2 together:

48 + 16.25 = 64.25.

The mass of the element, considering the given isotopes, is approximately 64.25 atomic mass units (u).

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A _______ strategy increases sales by introducing new products into new markets, while a _______ strategy entails creating a new product targeted to its current customers.

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A market development strategy increases sales by introducing new products into new markets, while a product development strategy entails creating a new product targeted to its current customers.

In a market development strategy, a company seeks to expand its customer base by entering new markets or geographic regions. This involves identifying untapped market segments or regions where the company's existing products can be introduced to attract new customers. The goal is to increase sales by reaching a wider audience with existing products.

On the other hand, a product development strategy focuses on creating new products or improving existing ones to cater to the needs and preferences of the company's current customer base. This strategy aims to enhance customer loyalty and satisfaction by providing them with innovative or improved products that meet their evolving demands. The company leverages its understanding of its existing customers to develop products that will resonate with them and generate additional sales.

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Final answer:

The Diversification strategy is used by businesses to boost sales by introducing new products into unexplored markets, whereas a Product Development strategy involves creating new products for the company's existing customers.

Explanation:

A Diversification strategy increases sales by introducing new products into new markets. This involves entering into an area, both in terms of product and market, where the company hasn't ventured before. For instance, a computer manufacturing company choosing to produce smartphones for a global market.

On the other hand, a Product Development strategy entails creating a new product targeted to its current customers. This strategy focuses on introducing a new product or innovation to the company's existing market to leverage the customer base. For example, a bread company introducing a new flavor of bread to existing customers.

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what length should an oboe have to produce a fundamental frequency of 110 hz on a day when the speed of sound is 343 m/s? (for this problem, treat the oboe as a tube that is open at both ends.)

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On a day when the sound speed is 343 m/s, the length of the oboe should be roughly 1.561 meters to create a fundamental frequency of 110 Hz.

To calculate the length of the oboe required to produce a fundamental frequency of 110 Hz, we can use the formula for the wavelength of a sound wave in a tube that is open at both ends:

λ = 2L

where λ is the wavelength and L is the length of the tube.

The speed of sound in air is given as 343 m/s, and the fundamental frequency is 110 Hz. We can use the formula for the speed of sound:

v = fλ

where v is the speed of sound, f is the frequency, and λ is the wavelength.

Rearranging the formula for wavelength, we have:

[tex]\lambda = \frac{v}{f}[/tex]

Substituting the given values:

[tex]\lambda \approx \frac{343 \, \text{m/s}}{110 \, \text{Hz}}[/tex]

Now we can calculate the length of the oboe:

[tex]L = \frac{\lambda}{2}[/tex]

Substituting the value of λ:

[tex]L = \frac{\frac{343 \, \text{m/s}}{110 \, \text{Hz}}}{2}[/tex]

Calculating the result:

L ≈ 1.561 m

Therefore, the length of the oboe should be approximately 1.561 meters to produce a fundamental frequency of 110 Hz on a day when the speed of sound is 343 m/s.

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Jared's business debt, which was previously deducted as partially worthless, became totally worthless in 2021. Only the amount not previously deducted can be deducted in 2021. True False

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The statement is false. Jared's business debt, which was previously deducted as partially worthless, became totally worthless in 2021. Only the amount not previously deducted can be deducted in 2021.

When a business debt becomes totally worthless, the entire amount of the debt can be deducted in the year it becomes worthless. This includes any portion of the debt that was previously deducted as partially worthless. The tax regulations allow for a deduction of the full amount of the debt when it is determined to be completely uncollectible or without any expectation of recovery.

Therefore, in the given scenario, Jared can deduct the full amount of the debt that became totally worthless in 2021, irrespective of whether any portion of it was previously deducted.

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Which sort algorithm is this: void Sort(int array[], int tempArray[], int left, int right) { int i, j, k, middle; if(right > left) { middle

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The provided code appears to implement the Merge Sort algorithm, a divide-and-conquer sorting algorithm. It recursively divides the array into smaller subarrays until each subarray contains only one element.

The given code snippet suggests the usage of two arrays, "array" and "tempArray," for sorting. The "left" and "right" parameters specify the range of indices to be sorted within the "array." The algorithm works as follows:

It checks if the range to be sorted (right > left) is valid. If not, it terminates as there is nothing to sort.

It calculates the middle index of the range as (left + right) / 2.

Recursively, the algorithm sorts the left half of the array by calling itself with the range (left, middle).

Recursively, the algorithm sorts the right half of the array by calling itself with the range (middle + 1, right).

Finally, it merges the two sorted halves into the "tempArray" using the Merge operation.

The merged result is copied back to the original "array" within the given range.

The sorting process continues recursively until the base case is reached (subarrays with only one element).

Merge Sort is an efficient sorting algorithm with a time complexity of O(n log n). It provides stability (preserves the relative order of equal elements) and is commonly used for sorting large datasets. To learn more about Merge Sort, you can refer to additional resources such as tutorials or textbooks on algorithms and data structures.

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Leptin signals through a tyrosine receptor kinase found in the brain. How would mutations in the leptin receptor most likely affect metabolism

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Mutations in the leptin receptor can lead to a dysfunction in the signaling pathway, resulting in a reduced response to leptin. This could cause a decrease in the regulation of appetite and energy expenditure, leading to an increase in body weight and potentially contributing to obesity.

Furthermore, mutations in the leptin receptor may also impact the body's ability to regulate metabolism, leading to metabolic disorders such as diabetes or metabolic syndrome. Overall, mutations in the leptin receptor can have significant effects on metabolism, contributing to weight gain and other metabolic abnormalities.

mutations cause a leptin-resistant state with permanent hyperphagia leading to severe obesity. The anorexigenic effect of leptin is also functionally disrupted in patients with sporadic obesity, indicating that leptin resistance is common in these individuals.

So, Mutations in the leptin receptor can lead to a dysfunction in the signaling pathway, resulting in a reduced response to leptin.

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Determine the amount of an investment if $300 is invested at an interest rate of 6.75% compounded semiannually for 20 years.

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The amount of the investment after 20 years at an interest rate of 6.75% compounded semiannually would be approximately $981.13.

To calculate the amount of an investment, we can use the compound interest formula:

A = P(1 + r/n)^(nt),

where:

A is the final amount,

P is the principal amount (initial investment),

r is the interest rate (as a decimal),

n is the number of times interest is compounded per year, and

t is the number of years.

Given:

Principal amount (P) = $300

Interest rate (r) = 6.75% = 0.0675 (as a decimal)

Number of times compounded per year (n) = 2 (semiannually)

Number of years (t) = 20

Substituting the values into the compound interest formula, we have:

[tex]A = 300(1 + 0.0675/2)^{(2*20)}.[/tex]

Calculating this expression, we find:

A ≈ $981.13 (rounded to the nearest cent).

Therefore, the amount of the investment after 20 years at an interest rate of 6.75% compounded semiannually would be approximately $981.13.

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a battery is used to charge a parallel combination of two identical capacitors. if the potential diferecne across thebattery terminals is v and the otal charge q flows thorugh teh battery during the charing process then the charge o nthe psotitive plate of each capcitor and the potential difference across eac hcapacitor are

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When a battery is used to charge a parallel combination of two identical capacitors, several key factors come into play.

Initially, when the charging process begins, a total charge Q flows through the battery. Since the capacitors are connected in parallel, the charge Q gets divided between them. As a result, each capacitor receives an equal share of Q/2 on its positive plate. This equal distribution of charge ensures that the charge on each capacitor is identical.

Moving on to the potential difference across each capacitor, it is worth noting that when capacitors are connected in parallel, the potential difference across each capacitor remains the same. Thus, the potential difference across each capacitor in this configuration is equal to the potential difference across the battery terminals, which is denoted as V.

To summarize, in the given situation:

The charge on the positive plate of each capacitor is Q/2, as the total charge Q is evenly distributed between the two identical capacitors.

The potential difference across each capacitor is V, which is equivalent to the potential difference across the battery terminals.

It is important to note that the above explanations assume idealized conditions and neglect factors such as internal resistance of the battery and leakage in the capacitors, which may affect the actual behavior of the system.

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IBM expects to pay a dividend of $4 next year and expects these dividends to grow at 7% a year. The price of IBM is $90 per share. Your estimate of the market risk premium is 6%. The risk-free rate of return is 5% and IBM has a beta of 1.2.What is IBM's cost of equity capital using the two methodologies, discounted growth model (DGM) and capital asset pricing model (CAPM) respectively

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IBM's cost of equity capital using the Capital Asset Pricing Model (CAPM) is estimated to be 12.2%.

To calculate IBM's cost of equity capital using the discounted growth model (DGM) and the capital asset pricing model (CAPM), we will need the following inputs:

Dividend next year (D1) = $4

Dividend growth rate (g) = 7%

Price of IBM stock (P) = $90

Market risk premium = 6%

Risk-free rate of return = 5%

Beta (β) = 1.2

Using the Discounted Growth Model (DGM):

The DGM formula for the cost of equity capital is as follows:

Cost of Equity (DGM) = (Dividend next year / Price of stock) + Dividend growth rate

Cost of Equity (DGM) = ($4 / $90) + 0.07

Cost of Equity (DGM) = 0.0444 + 0.07

Cost of Equity (DGM) = 0.1144 or 11.44%

Therefore, IBM's cost of equity capital using the Discounted Growth Model (DGM) is estimated to be 11.44%.

Using the Capital Asset Pricing Model (CAPM):

The CAPM formula for the cost of equity capital is as follows:

Cost of Equity (CAPM) = Risk-free rate + Beta * (Market risk premium)

Cost of Equity (CAPM) = 0.05 + 1.2 * 0.06

Cost of Equity (CAPM) = 0.05 + 0.072

Cost of Equity (CAPM) = 0.122 or 12.2%

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TRUE/FALSE. A Type Sa galaxy is a spiral with a large bulge and tightly wound arms.

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True. A Type Sa galaxy is a spiral galaxy with a large bulge and tightly wound arms.

Galaxies are categorized based on their morphology, and the Hubble classification system is commonly used to classify galaxies into different types. According to the Hubble sequence, spiral galaxies are classified as Type Sa, Type Sb, and Type Sc, depending on the characteristics of their bulges and arms.

In the case of a Type Sa galaxy, it is characterized by a large, prominent bulge at its center and tightly wound arms. The bulge is a concentrated, spherical or ellipsoidal region containing older stars, while the arms extend from the bulge and contain younger stars, gas, and dust.

The tightly wound arms in a Type Sa galaxy indicate a more tightly wound spiral structure compared to other types. This results in a more compact appearance and less pronounced separation between the arms.

A Type Sa galaxy is indeed a spiral galaxy with a large bulge and tightly wound arms. Its classification within the Hubble sequence indicates specific characteristics related to the structure and morphology of the galaxy. Understanding these classifications helps astronomers categorize and study the diverse range of galaxies in the universe.

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If we are considering psychological egoism and are also appealing to common sense, then a. we would normally accept that the majority of our choices are unselfish. b. we would normally accept psychological egoism. c. we would normally reject everything that moral psychology has to say about virtues. d. we would normally reject psychological egoism.

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The correct answer is option d. Using common sense, we would reject psychological egoism.

Psychological egoism holds that all human acts are guided by self-interest. However, common sense and everyday observations show that people are altruistic and care about others.

Common sense implies people don't always act in their own self-interest. People often help others without expecting anything in return. Helping others, volunteering, and building genuine relationships show it.

Thus, psychological egoism contradicts our ordinary experiences and observations, so common sense suggests rejecting it. Empathy, compassion, and morality drive most of our decisions.

Rejecting psychological egoism does not mean rejecting moral psychology's views on virtues (option c). Moral psychology studies virtues and how they affect people and society. Moral psychology's insights into virtues and ethics are unaffected by psychological egoism.

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In the optical industry, a thin film of magnesium fluoride (MgF2)with a refractive index of 1.38 is used coat a glass lens of refractive index 1.50. What should be the thickness of the coating to reduce the reflection of 550-nm light (wavelength of green light in vacuum)

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The thickness of the magnesium fluoride coating needed to reduce the reflection of 550 nm light on a glass lens with a refractive index of 1.50 is approximately 26.98 nm.

To calculate the thickness of the magnesium fluoride coating needed to reduce the reflection of 550-nm light on a glass lens with a refractive index of 1.50, we can use the following formula:

t = (λ/4n) * ((n1/n2)^2 - 1)^(-1/2)

where:
- t is the thickness of the coating
- λ is the wavelength of the light in a vacuum (550 nm)
- n is the refractive index of the coating (1.38 for MgF2) and the lens (1.50)
- n1 is the refractive index of the coating (1.38)
- n2 is the refractive index of the lens (1.50)

Plugging in the values, we get:

t = (550 nm / 4 * 1.38) * ((1.50 / 1.38)^2 - 1)^(-1/2)
t = 26.98 nm

Therefore, the thickness of the magnesium fluoride coating needed to reduce the reflection of 550 nm light on a glass lens with a refractive index of 1.50 is approximately 26.98 nm.

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Which branch of psychology seeks to identify and promote those qualities that lead to happy, fulfilled, and contented lives

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Positive psychology seeks to identify and promote qualities that lead to happy, fulfilled, and contented lives.

What is the branch of psychology that focuses on promoting happiness and fulfillment?

Positive psychology is a branch of psychology that emphasizes the study of positive emotions, character strengths, and optimal functioning. It seeks to identify and promote qualities that contribute to well-being, happiness, and a sense of fulfillment in individuals and communities. Instead of solely focusing on the diagnosis and treatment of mental health issues, positive psychology aims to understand what makes life worth living and how individuals can thrive.

Positive psychology explores topics such as gratitude, resilience, mindfulness, optimism, personal strengths, positive relationships, and the pursuit of meaning and purpose. It emphasizes the importance of positive experiences, positive traits, and positive institutions in enhancing well-being. By studying and promoting these qualities, positive psychology aims to improve overall psychological well-being and help individuals lead more satisfying and flourishing lives.

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Suppose the capacity of each machine in Station 1 in the Littlefield Technologies game is 15 contracts per day. Suppose there are 5 machines in this station. The utilization of this station is 82%. On average, there are 24 contracts in this station (either in the waiting line or on the machines). Compute the flow time in this station in hours (assume a day is 24 hours). Enter your answer in terms of HOURS with ONE decimal point.

Answers

The flow time in Station 1 is approximately 10.6 hours, calculated by dividing the total contracts in the station by the actual processing rate.

To calculate the flow time in Station 1, we need to divide the total number of contracts in the station (24) by the total processing capacity of the station (75 contracts per day). This will give us the average time it takes for a contract to flow through the station.

Calculate the total processing capacity of Station 1

The capacity of each machine is 15 contracts per day, and there are 5 machines in Station 1. Therefore, the total processing capacity of Station 1 is 15 contracts/machine * 5 machines = 75 contracts per day.

Calculate the utilization of Station 1

The utilization of Station 1 is given as 82%. Utilization is calculated by dividing the actual processing rate by the maximum processing capacity. So, we can calculate the actual processing rate as 82% of the total processing capacity: 0.82 * 75 contracts per day = 61.5 contracts per day.

Calculate the flow time

The flow time is calculated by dividing the total number of contracts in the station by the actual processing rate. In this case, there are 24 contracts in the station and the actual processing rate is 61.5 contracts per day. Therefore, the flow time in Station 1 is 24 contracts / 61.5 contracts per day = 0.39 days.

Since we need the answer in terms of hours, we can multiply the flow time by 24 (hours in a day) to convert it: 0.39 days * 24 hours/day = 9.36 hours.

Rounding this to one decimal point, the flow time in Station 1 is approximately 10.6 hours.

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^90Sr decays with the emission of a 2.8 MeV beta particle. Strontium is chemically similar to calcium and is taken up by bone. A 75kg person exposed to waste from a nuclear accident absorbs ^90Sr with an activity of 370,000 Bq. Assume that all of this ^90Sr ends up in the skeleton. The skeleton forms 17% of the person's body mass.
A)If 50% of the decay energy is absorbed by the skeleton, what doseequivalent in Sv will be received by the person's skeleton in the first month?

Answers

The skeleton of the person would have had about 552,99 Sv of dosage equivalent in the first month.

To calculate the dose equivalent in Sv received by the person's skeleton in the first month, we need to consider the activity of ⁹⁰Sr, the decay energy, and the fraction absorbed by the skeleton.

Given:

- Activity of ⁹⁰Sr: 370,000 Bq

- Decay energy of ⁹⁰Sr: 2.8 MeV

- Fraction of decay energy absorbed by the skeleton: 50%

- Body mass: 75 kg

- Skeleton mass (17% of body mass): 0.17 * 75 kg

First, let's calculate the number of decays occurring in the first month using the activity:

Number of decays = Activity * Time

                = 370,000 Bq * (30 days * 24 hours * 60 minutes * 60 seconds)

                = 320,040,000,000 decays

Next, we can calculate the energy absorbed by the skeleton in the first month:

Energy absorbed = Number of decays * Decay energy * Fraction absorbed

              = 320,040,000,000 * 2.8 MeV * 0.5

              = 448,056,000,000 MeV

Since 1 MeV = 1.6 x 10⁻¹³ J, we can convert the energy absorbed to joules:

Energy absorbed (J) = 448,056,000,000 MeV * 1.6 x 10⁻¹³ J/MeV

                   = 71,688.96 J

Finally, we can calculate the dose equivalent in Sv using the absorbed energy and the weighting factor for beta radiation (Wb = 1):

[tex]Dose equivalent (Sv) = \frac{{71,688.96 \, \text{J} \times 1}}{{0.17 \times 75 \, \text{kg}}}[/tex]

               [tex]\frac{{71,688.96 \, \text{J} \times 1}}{{0.17 \times 75 \, \text{kg}}}[/tex]

                   ≈ 552.99 Sv

Therefore, the dose equivalent received by the person's skeleton in the first month would be approximately 552.99 Sv.

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WC Inc. has a $10 million (face value), 10-year bond issue selling for 99 percent of par that pays an annual coupon of 9 percent. What would be WC's before-tax component cost of debt

Answers

WC Inc.'s before-tax component cost of debt is 9.09 percent.

What is the interest rate on WC Inc.'s bond issue?

To calculate WC Inc.'s before-tax component cost of debt, we need to consider the coupon payment and the bond's selling price. The coupon payment is the annual interest payment on the bond, which is 9 percent of the face value. In this case, the face value is $10 million, so the annual coupon payment is $900,000 (0.09 * $10,000,000).

The bond is selling for 99 percent of its par value, which means it is selling for $9.9 million (0.99 * $10,000,000).

The before-tax component cost of debt is calculated by dividing the annual coupon payment by the bond's selling price. In this case, $900,000 divided by $9.9 million results in 0.0909 or 9.09 percent.

Therefore, WC Inc.'s before-tax component cost of debt is 9.09 percent.

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sarah was always looking for bargains, and she was talking about the number of refurbished and reconditioned electronics on companies' website. her friend alexis, a marketing major, explained to her that this was one of the results of the growth of which process?group of answer choicesproduct-life extensionsreverse supply chainsrecyclingprofit maximization

Answers

The growth of refurbished and reconditioned electronics on companies' websites is a result of the growth of the "reverse supply chains" process.

Reverse supply chains refer to the activities involved in the collection, refurbishment, and resale of used or returned products. It is a process that focuses on the efficient management of product returns and the recovery of value from previously owned goods.

So, By engaging in reverse supply chains, companies can extend the product life cycle, reduce waste, and offer refurbished or reconditioned products to customers at lower prices. This process allows companies to maximize the value of returned or used products and cater to customers who are looking for bargains, as in Sarah's case.

Hence, The growth of refurbished and reconditioned electronics on companies' websites is a result of the growth of the "reverse supply chains" process.

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What is the charge of each: A molecule with 14 total electrons and 12 total protons An atom with 55 protons and 54 electrons An atom with 12 protons and 10 electrons A molecule with 76 electrons and 73 protons

Answers

14-electron and 12-protons molecule includes -2 charges. 55 protons and 54 electrons, +1 charge. 12-proton, 10-electron atom includes +2 charges. 76 electrons and 73 protons includes -3 charges.

The number of protons and electrons in an atom or molecule determines its charge.

14-electron and 12-proton molecule:

The molecule has 14 electrons and a negative charge of -14. It possesses 12 protons with +12 charges. The molecule has a -2 charge because electrons outnumber protons.

A 55-proton and 54-electron atom:

The atom possesses +55 protons in this case. It possesses -54 electrons. The atom has +1 charge because protons outnumber electrons.

12-proton, and 10-electron atom:

This atom contains 12 protons and a +12 charge. It possesses -10 electrons. The atom has a +2 charge because protons outnumber electrons.

76 electron and 73 proton molecule:

76 electrons give the molecule a -76 charge. It possesses +73 protons. Electrons outnumber protons, giving the molecule a -3 charge.

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Looking at the velocity graph on the right, determine when the object changes direction. Justify your answer.​

Answers

Looking at the velocity graph on the right, the object changes direction at 1 sec.

If a line representing the position or displacement of an object on a graph crosses over the x-axis, from the positive region to the negative region (or vice versa), it indicates a change in direction of the object.

On a position or displacement graph, the x-axis typically represents time, and the y-axis represents the position or displacement of the object.

Thus, when the line representing the object's position or displacement crosses the x-axis, it means that the object has reached a point where its position or displacement changes from positive to negative (or vice versa).

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Microwaves of wavelength 5. 45 cm enter a long, narrow window in a building that is otherwise essentially opaque to the incoming waves. If the window is 35. 5 cm wide, what is the distance from the central maximum to the first-order minimum along a wall 6. 65 m from the window

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The central maximum refers to the brightest region of the interference pattern, while the first-order minimum represents the first dark region away from the central maximum. Distance from the central maximum to the first-order minimum is 0.0958 meters.

To calculate the distance from the central maximum to the first-order minimum, we need to apply the concept of the single-slit diffraction formula: d * sin(theta) = m * lambda

d represents the width of the window (35.5 cm). theta represents the angle between the central maximum and the first-order minimum. m represents the order of the minimum (1 for the first-order minimum).

lambda represents the wavelength of the microwaves (5.45 cm).First, let's convert the measurements to the same units. We'll use meters, so 35.5 cm becomes 0.355 m, and 5.45 cm becomes 0.0545 m.

Now, we can rearrange the formula to solve for the angle theta: theta = arcsin(m * lambda / d) Substituting the values, we have: theta = arcsin(1 * 0.0545 m / 0.355 m) Evaluating this expression, we find: theta ≈ 0.155 radians

Finally, we can calculate the distance from the central maximum to the first-order minimum using trigonometry. In this case, the distance corresponds to the perpendicular distance between the window and the wall. We can use the tangent function: Distance = d * tan(theta)

Substituting the values, we have: Distance = 0.355 m * tan(0.155 radians) Calculating this, we find: Distance ≈ 0.0958 m

Therefore, the distance from the central maximum to the first-order minimum along the wall, located 6.65 meters from the window, is approximately 0.0958 meters.

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A sound waves moves from a region of cold air to a region of warmer air (e. 9 . through an open doonway from the cold outide arf to the warm indoor air). Which of the following statements are true about this situation? (i) The wave experiences an impedance mismatch at the transition from the cold to warm aic: (ii) The wave will be completely reflected backwards at the transition from the cold to warm air. (iii) They wave will be completely transmitted from the cold to warm air without any reflection. Select the correct answer Only statement (0) is true. Only statement (ii) is true. None of the statements are true. Only statement (iii) is true. Only statements (i) and (ii) are true. Only statements (i) and (iii) are true.

Answers

A sound waves moves from a region of cold air to a region of warmer air.

The correct answer is: Only statement (i) is true.

(i) The wave experiences an impedance mismatch at the transition from the cold to warm air: This statement is true. When a sound wave travels from one medium to another with a different impedance, such as from cold air to warm air, an impedance mismatch occurs. The impedance depends on the density and speed of sound in the medium. Since the speed of sound increases with increasing temperature, there is a change in impedance at the transition, which can lead to partial reflection and transmission of the sound wave.

(ii) The wave will be completely reflected backwards at the transition from the cold to warm air: This statement is false. The wave will not be completely reflected backward. Instead, there will be partial reflection and transmission of the sound wave due to the impedance mismatch.

(iii) The wave will be completely transmitted from the cold to warm air without any reflection: This statement is false. The wave will experience partial reflection and transmission at the transition due to the impedance mismatch between the cold and warm air.

Therefore, the correct answer is that only statement (i) is true.

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Which country first put a manned spacecraft into orbit?.

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The Soviet Union (now Russia) was the first country to put a manned spacecraft into orbit.

On April 12, 1961, Soviet cosmonaut Yuri Gagarin made history by becoming the first human to orbit the Earth aboard the Vostok 1 spacecraft. This groundbreaking achievement was a result of the Soviet space program's efforts to develop the necessary technology and launch capabilities.

Gagarin's successful orbit marked a significant milestone in space exploration and demonstrated the Soviet Union's prowess in the space race with the United States.

The mission not only showcased Soviet technological advancements but also symbolized a major leap forward in human exploration of space, inspiring future generations of astronauts and scientists worldwide.

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You are a birdwatcher visiting the desert southwest. Which of the following birds are you most likely to find? a ferruginous pygmy owl, which often nests in saguaro cacti and eats insects a bay-breasted warbler, which feeds on larvae found in coniferous trees an orchard oriole, which builds its hanging nest in scrubby or open wooded areas an American dipper, which feeds on insects found in fast-flowing, rocky streams

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As a birdwatcher visiting the desert southwest, the bird I am most likely to find is the ferruginous pygmy owl.

These owls are well-adapted to the arid desert environment and are often found nesting in saguaro cacti. Their small size and camouflage make them difficult to spot, but their distinctive call and active hunting behavior make them a sought-after sighting. The ferruginous pygmy owl primarily feeds on insects, which are abundant in the desert ecosystem, making it well-suited to this habitat.

While the bay-breasted warbler, orchard oriole, and American dipper are fascinating birds, they are not commonly found in the desert southwest. The bay-breasted warbler is typically found in coniferous forests and feeds on larvae found in trees. The orchard oriole prefers scrubby or open wooded areas, where it builds its hanging nest. The American dipper, on the other hand, is known for its unique adaptation to fast-flowing, rocky streams and feeds on insects found in these aquatic environments.

Therefore, if I were a birdwatcher in the desert southwest, my best bet for an exciting sighting would be the ferruginous pygmy owl, as it is well-suited to the arid conditions and can be found nesting in saguaro cacti.

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Of all of the barrier methods described in the Food and Drug Administration Birth Control Guide, which one is the most effective in preventing pregnancy

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According to the Birth Control Guide published by the U.S. Food and Drug Administration (FDA), the most effective barrier method in preventing pregnancy is the diaphragm with spermicide. This method has a pregnancy rate of 12 per 100 women during the first year of typical use. A diaphragm is a shallow, dome-shaped cup that fits into the vagina and covers the cervix. Spermicide is a chemical that kills sperm. The diaphragm must be used with spermicide every time you have sex.

About FDA

The United States Food and Drug Administration (FDA) is the agency responsible for regulating food, dietary supplements, drugs, biopharmaceutical products, blood transfusions, medical devices, devices for radiation therapy, veterinary products, and cosmetics in the United States.

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Jen is 50 and manages her money wisely. She believes in the U.S. monetary system although, from time to time, Jen has friends who have turned to buying gold and artwork due to their concerns. Jen has more confidence in the ___ of money than some of her friends.

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Jen is 50 and manages her money wisely. She believes in the U.S. monetary system although, from time to time, Jen has friends who have turned to buying gold and artwork due to their concerns. Jen has more confidence in the stability of money than some of her friends.

While her friends occasionally turn to buying gold and artwork as alternative investments due to their concerns, Jen maintains faith in the traditional financial instruments like stocks, bonds, and cash. Her confidence in the stability of money stems from her understanding that the U.S. Federal Reserve is responsible for managing the money supply, controlling inflation, and ensuring the overall health of the economy. She also recognizes that the U.S. dollar is a globally accepted reserve currency, further strengthening her trust in the system.

In comparison, investments like gold and artwork may not be as liquid as traditional financial instruments, and their values can be subjective and prone to fluctuations. By having confidence in the stability of money and the U.S. monetary system, Jen chooses to invest her funds in well-regulated and reliable assets, ensuring long-term financial security and growth. So therefore Jen is 50 and manages her money wisely, having more confidence in the stability of money than some of her friends.

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