A heater is connected to 220 V a.c. to heat 2 kg water at 40°C. If the water absorbs 3.6 x 105 J heat energy, find the final temperature of the water. ​

Answer: superior vena cava (SVC) and inferior vena cava (IVC),

Explanation:

Oxygenated blood returns from the body to the heart through the superior vena cava and the inferior vena cave

The pressure differential between the inside and outside of the submarine must be taken into account in order to determine the force needed to push out the pop-out hatch at a depth of 110 metres below the surface. The following formula may be used to calculate the force:

Force = Pressure Difference × Area

The difference between the interior air pressure and the exterior water pressure is known as the pressure differential. The external water pressure at a depth of 110 metres may be computed as follows:

Water Pressure = Density of Water × Gravitational Acceleration × Depth

On putting all the given values we get

Water Pressure = 1024 kg/m³ × 9.8 m/s² × 110 m = 1,174,784 Pa

Given that the internal air pressure is 1 atm, or 101,325 Pa, the pressure differential is as follows:

Pressure Difference = Water Pressure - Internal Air Pressure = 1,174,784 Pa - 101,325 Pa = 1,073,459 Pa

force is calculated as,

Force = Pressure Difference × Area = 1,073,459 Pa × (1.7 m × 0.8 m) = 1,375,899 N

Hence, a force of approximately 1,375,899 Newtons must be applied to the pop-out hatch to push it out at a depth of 110m below the surface.

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Answer:

Magnetic power, also known as magnetic strength or magnetic field strength, refers to the intensity or magnitude of a magnetic field. It represents the amount of magnetic force exerted by a magnet or a magnetic field on other magnetic objects or charged particles.

The magnetic power is determined by factors such as the size and strength of the magnet, the distance from the magnet, and the magnetic properties of the materials involved. It is typically measured in units of tesla (T) or gauss (G).

In practical terms, magnetic power describes the ability of a magnetic field to attract or repel objects, influence the motion of charged particles, or induce magnetic effects in nearby materials. The higher the magnetic power, the stronger the magnetic field and the greater its impact on surrounding objects or substances.

Magnetic power finds applications in various fields, including electromagnetism, electronics, magnetic resonance imaging (MRI), magnetic levitation, and many industrial processes where magnetic fields are utilized for their properties and effects.

Explanation:

The statement "To determine the weight of the capacitor the z components of Cable 1 and 2 (both positive) are added together" is false.

To calculate precisely how much pressure a particular capacitor is enduring, it is necessary to take into account both Cable 1 and Cable 2's corresponding z components in combination.

We then proceed by multiplying that number using acceleration caused by gravity in order to ascertain its overall weight.

The force on the capacitor is calculated as follows:

W = F * g

Where;

W is the weight of the capacitor

F is the force on the capacitor

g is the acceleration due to gravity

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1.The driver has traveled a distance of 23 km.

2.The driver's total displacement is 17 km east.

1.The distance traveled by the driver can be calculated by adding the distances traveled in each leg of the journey:

Distance traveled = (8 km) + (3 km) + (12 km) = 23 km

2.The driver's total displacement takes into account not only the distance traveled but also the direction. To calculate the displacement, we need to consider the net distance and direction from the starting point to the final position.

The driver initially travels 8 km east, then 3 km west, and finally 12 km east. Since the driver is traveling back and forth, the net displacement can be found by subtracting the distance traveled west from the distance traveled east:

Net displacement = (Distance traveled east) - (Distance traveled west)

= (8 km + 12 km) - (3 km)

= 20 km - 3 km

= 17 km

The driver's total displacement is 17 km east.

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the car's displacement in the first 20 seconds is 100 m, and the total displacement is 912.5 m. The total time taken is 33 seconds.

We may apply the equation v² = u² + 2as, where v is the final velocity, u is the beginning velocity, an is the acceleration, and s is the displacement, given that the automobile starts at rest and travels 100 metres before reaching a velocity of 25 m/s. We can find the acceleration by plugging in the values:

25² = 0² + 2a(100)

625 = 200a

a = 3.125 m/s²

By using equation v = u + at, we get

25 = 0 + 3.125t

t = 8 s

displacement is given by,

s = ut + (1/2)at²:

s = 0(8) + (1/2)(3.125)(8)²

s = 100 m

car travels at a constant velocity of 25 m/s for 750 m. Therefore, the displacement during this period is simply 750 m.

The car comes to rest in 5 seconds, and since it decelerates uniformly, the final velocity is 0 m/s.

Using the equation v = u + at, the deceleration is given as,

0 = 25 + a(5)

a = -5 m/s²

Using the equation v² = u² + 2as the displacement is

0² = 25² + 2(-5)s

0 = 625 - 10s

s = 625/10

s = 62.5 m

Total displacement = displacement during initial acceleration + displacement during constant velocity + displacement during deceleration

Total displacement = 100 m + 750 m + 62.5 m

Total displacement = 912.5 m

Total time taken = time taken for initial acceleration + time taken for constant velocity + time taken for deceleration

Total time taken = 8 s + 20 s + 5 s

Total time taken = 33 s

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Answer: mindsets can affect learning

Explanation: negative mindsets vs positive ones, individually affect someone. As everyone is different, this could differ between certain people(s). Generally, it is thought the more positive the mindset, the more positive the affect.

The partial pressures of CH4 and CO2 after mixing are 1.06 atm and 0.43 atm, respectively.

The number of moles of gas in each vessel can be calculated using the following formula:

n_i = P_i * V / RT

Substituting the given values, we get the following equations for the number of moles of gas in each vessel:

n_A = (1.5 atm) * V / (0.08206 L atm/mol K) * 289.15 K = 0.91 mol

n_B = (0.6 atm) * V / (0.08206 L atm/mol K) * 289.15 K = 0.37 mol

Therefore, the total number of moles of gas in the system is:

n_total = 0.91 mol + 0.37 mol = 1.28 mol

The mole fraction of each gas in the system is equal to the number of moles of that gas divided by the total number of moles of gas in the system.

x_i = n_i / n_total

Substituting the given values, we get the following mole fractions for each gas:

x_CH4 = 0.91 mol / 1.28 mol = 0.71

x_CO2 = 0.37 mol / 1.28 mol = 0.29

The partial pressure of each gas is equal to the mole fraction of that gas multiplied by the total pressure of the system.

P_i = x_i * P_total

Substituting the given values, we get the following partial pressures for each gas:

P_CH4 = 0.71 * 1.5 atm = 1.06 atm

P_CO2 = 0.29 * 1.5 atm = 0.43 atm

Therefore, the partial pressures of CH4 and CO2 after mixing are 1.06 atm and 0.43 atm, respectively.

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Answer:

75 cm/second.

Explanation:

Formula:

Walking speed = stride length / time per step

Walking speed = 90cm/time per step

                         = 90cm/1.2 seconds (a common estimate time per step)

                         = 75cm/second.

The atomic mass unit is 37.04unit

The size of a nexus is  generally expressed in terms of its compass, not periphery. The compass of a  nexus is related to its mass number( A) by a general empirical formula known as the" nuclear compass formula"  

 [tex]R = R_o(A\frac{1}{3}) ,[/tex]  

where R is the compass of the  nexus,

R ₀ is a constant(  roughly1.2 fm),

and A is the mass number.  

To determine the anticipated mass of the  nexus in  infinitesimal mass units( u), we can use the following equation  

Mass =  A × mass of a single nucleon,  

where the mass of a single nucleon is  roughly 1  infinitesimal mass unit( 1 u).  

Given that the periphery of the  nexus is8.0 fm, we can calculate the compass  

R = [tex]\frac{8.0fm}{4.0}[/tex]= 4.0 fm.  

Now, we can use the nuclear compass formula to estimate the mass number( A)  

fm =  R ₀ A(1/3).  

By rearranging the formula and  working for A,

we have   A = ((4.0 fm/ R ₀))  

Substituting the value of R ₀(  roughly1.2 fm) into the equation  

A = ((4.0 fm/1.2 fm))  

A ≈(3.33) 3

A ≈37.04.  

Thus, the anticipated mass of the  nexus in infinitesimal mass units would be  roughly37.04u.

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To hear the third harmonic of a standing sound wave at a frequency of 340 Hz, the length of the closed air column should be approximately 4.55 meters.

The formula for the length of a closed-closed air column in resonance can be used to calculate the length of the air column necessary to hear the third harmonic of a standing sound wave:

L = (4/n) * v/f

Where L represents the height of the air column, n the harmonic number, v the air speed, and f the desired harmonic frequency.

Given:

25°C (298 K) is the ambient temperature.

The required harmonic's (f) frequency is 340 Hz.

(n) = 3 for the harmonic number

At room temperature, the speed of sound in air can be roughly calculated to be 343 m/s. It must be adjusted for the current air temperature because the speed of sound is temperature-dependent.

Using the equation: v = 331.5 + 0.6 * T, where T is the Celsius value of the air temperature.

If T = 25 °C is used in the formula:

v = 331.5 + 0.6 * 25 v ≈ 331.5 + 15 v ≈ 346.5 m/s

We can now determine how long the air column is:

4.55 metres for L = (4/3) * 346.5 / 340 L.

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The average speed of the elderly woman walking around the shopping center is 1.80 km/h.

To calculate the average speed of the elderly woman, we can use the formula for velocity, which is equal to the distance traveled divided by the time taken. In this case, the distance traveled is 0.30 km and the time taken is 10 minutes. However, average speed is generally expressed in units of distance per unit of time, so we need to convert minutes to hours.

There are 60 minutes in one hour, so 10 minutes is equal to 10/60 = 1/6 hours.

Now we can calculate the average speed by dividing the distance traveled (0.30 km) by the time taken (1/6 hours):

Average speed = 0.30 km / (1/6 h)

= 0.30 km * (6/1 h)

= 1.80 km/h

Therefore, the average speed of the elderly woman walking around the shopping center is 1.80 km/h.

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You would need to travel approximately 0.25 light years to reach the star located 4.2 light years away in only 3 months, as measured by your own wristwatch.

According to special relativity, as an object approaches the speed of light, time dilation occurs. This means that time would appear to pass slower for the traveler relative to a stationary observer. To calculate the distance you would need to travel, considering time dilation, we need to account for the time dilation factor γ (gamma). The formula for time dilation is T' = T / γ, where T' is the observed time by the traveler and T is the time measured by the stationary observer.

Assuming you want to travel 4.2 light years in 3 months (as measured by your wristwatch), we need to find the value of γ that satisfies T' = 3 months. Solving the equation, we find γ = T / T' = 4.2 years / 3 months. Converting years to months, we have γ = 50.4 months / 3 months = 16.8. Now, we can calculate the distance you would need to travel by dividing the observed distance (4.2 light years) by γ: 4.2 light years / 16.8 = 0.25 light years.

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We can determine the potentials at B, C, and D with respect to ground by adding up the potential differences from each point to ground:

To determine the potential difference of A with respect to C, we subtract the potential at C from the potential at A:

To determine the potential difference of C with respect to A, we subtract the potential at A from the potential at C:

To determine the potential difference of ground with respect to B, we subtract the potential at B from the potential of ground (which is assumed to be zero):

Answer:

Pounds

Explanation:

the unit of measurement for weight is pounds

Answer:

3÷5 1.2÷2 ×8i I think that is the best

Answer:

Breaking an atom refers to a process called nuclear fission, which involves splitting the nucleus of an atom into smaller nuclei. This is typically accomplished by bombarding the atom with a neutron, which causes the nucleus to become unstable and split apart, releasing a large amount of energy in the process. This energy is what is harnessed in nuclear power plants to generate electricity. However, it should be noted that nuclear fission can also have potentially harmful effects, such as the release of radioactive material and the potential for nuclear accidents.

An incandescent object refers to an object that emits light as a result of being heated to a high temperature.

When an object is heated, its atoms and molecules gain energy, causing them to vibrate and move more rapidly. This increased energy causes the object to emit electromagnetic radiation, including visible light, which makes the object glow.

Incandescence is commonly observed in everyday objects such as incandescent light bulbs, where a tungsten filament is heated by an electric current until it reaches a temperature that causes it to emit visible light.

As the filament gets hotter, it emits light with a higher intensity and shifts towards shorter wavelengths, starting from a warm red glow and progressing towards a brighter, white light.

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Answer:

50 N

Explanation:

To determine the force exerted on the particle, we can use Newton's second law of motion, which states that the force (F) acting on an object is equal to the mass (m) of the object multiplied by its acceleration (a). Mathematically, this can be expressed as:

F = m * a

Given that the mass of the particle is 5 kg and the acceleration is 10 m/s^2, we can substitute these values into the formula:

F = 5 kg * 10 m/s^2

F = 50 N

The investigation" Place soil in the bottom of a container and water on top, place it in the sun, and measure the temperature of the container" will help them make this comparison.

A starting point for conducting a comparative analysis is to fill a container with soil followed by pouring water on top.

The next step involves placing it under sun rays while simultaneously recording its temperature. Post that, we need to separate the sand from water to rapidly gauge any change in temperature.

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Complete question:

A science teacher asks her class to compare the way in which heat is transferred to water in a pond as opposed to the soil at the edge of the pond. Which of the following investigations will help them make this comparison?

a. Mix water and soil in a container, place it in the sun, and measure the temperature of the container.

b. Place soil and water in separate containers, place them indoors, and monitor the temperature of the containers.

c. Place soil and water in separate containers, place them in the sun, and monitor the temperatures of each container.

d. Place soil in the bottom of a container and water on top, place it in the sun, and measure the temperature of the container.

More details are required in order to calculate liquid A's height. Without knowing the volume or mass of the liquid, the density alone is not enough to determine the height. But if we assume that liquid A's density stays constant throughout and we have a known-volume container filled with liquid A, we may apply the following formula:

Height = Volume / Base Area

Assume liquid A has a volume of 100 cm3. To adjust the formula for height, we may do the following:

Height = Volume / Base Area = 100 cm³ / Base Area

If the base area is known, we may use the formula to get the height by substituting the base area. Otherwise, it is impossible to calculate the height of liquid A without more details.

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Andrea's displacement after 137 seconds is 824.74 meters to the east. This means that she has moved a distance of 824.74 meters in the eastward direction from her starting position.

Andrea's displacement after 137 seconds can be calculated by multiplying her average speed by the time traveled. Since she is running to the east, her displacement will be positive.

Displacement is given by the formula: Displacement = Average speed × Time

Substituting the given values, we have: Displacement = 6.02 m/s × 137 s

Calculating this expression, we find: Displacement = 824.74 m Displacement is a vector quantity that not only represents the magnitude (distance) but also the direction of motion. In this case, Andrea's displacement is positive because she ran to the east, indicating a displacement in the positive x-direction.

It's important to note that displacement is different from distance. While distance refers to the total path traveled, displacement only considers the change in position from the starting point to the final position.

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Explanation:

See image

In this lesson, I have learned that physical fitness tests are essential in assessing and measuring various aspects of our physical well-being.

They provide valuable information about our current fitness levels, strengths, and areas that require improvement. These tests help in determining our overall health, identifying potential health risks, and developing personalized fitness programs.

Based on the results of my physical fitness tests, I have found out that I am capable of doing a moderate level of cardiovascular endurance exercises, such as running or cycling, and I have good flexibility.

However, I need improvement in my muscular strength and endurance, as well as my agility and coordination. These areas require more attention and targeted exercises to enhance my overall physical fitness.

The health-related fitness component that I like the most is cardiovascular endurance because it allows me to engage in activities that raise my heart rate and improve the efficiency of my cardiovascular system.

It not only enhances my overall stamina but also has numerous health benefits, such as reducing the risk of cardiovascular diseases and improving mental well-being.As a student, I will promise to incorporate regular physical activity into my daily routine.

I understand that physical fitness is crucial for my overall well-being and academic performance. I will make a conscious effort to engage in activities that target my areas of improvement, such as strength training exercises and agility drills.

Additionally, I will strive to maintain a balanced and nutritious diet to support my physical fitness goals. By prioritizing my health and fitness, I aim to lead a more active and fulfilling lifestyle while achieving my academic objectives.

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Answer:

The answer is 5×10‐⁵

Step-by-step Explanation:

[tex] \alpha = \frac{l2 - l1}{l1( \beta 2 - \beta 1)} [/tex]

let ß be ø

[tex] \alpha = \frac{40.05 - 40}{40(45 - 20)} [/tex]

[tex] \alpha = \frac{0.05}{40 \times 25} [/tex]

[tex] \alpha = \frac{0.05}{1000}[/tex]

[tex] \alpha = \frac{0.05}{1000}[/tex][tex] \alpha = 5.0 \times {10}^{ - 5} [/tex]

The electric potential energy, Ue, for charge q₁ is -1.88 x 10⁻¹¹ J.

The electric potential energy between two charges is given by the following equation:

Ue = k × q₁ × q₂ / r

where:

Ue is the electric potential energy in Joules

k is the Coulomb constant, which is equal to 8.988 x 10⁹ N m² C⁻²

q₁ and q₂ are the charges in Coulombs

r is the distance between the charges in meters

In this case:

Ue = ?

k = 8.988 x 10⁹ N m² C⁻²

q₁ = +2.00 x 10⁻⁵ C

q₂ = +3.80 x 10⁻⁶ C

r = 0.10 m

\Substituting these values into the equation:

Ue = 8.988 x 10⁹ N m² C⁻² × (2.00 x 10⁻⁵ C) × (3.80 x 10⁻⁶ C) / 0.10 m

Ue = -1.88 x 10⁻¹¹ J

Therefore, the electric potential energy for charge q1 is -1.88 x 10⁻¹¹ J. The negative sign indicates that the potential energy is attractive.

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