is the following statement true or false? a block completely submerged in water experiences greater buoyancy force on earth than on mars, because the gravitational acceleration g is greater on earth.

The most penetrating of the given options is gamma rays.

Therefore the answer is c. Gamma rays

When it comes to ionizing radiation, the term "penetration" refers to how deeply the radiation can penetrate into matter before being absorbed. Alpha, beta, and gamma rays are all types of ionizing radiation, but they differ in their ability to penetrate matter.

Alpha rays consist of positively charged particles (helium nuclei) and are relatively large and heavy. As a result, they can be stopped by a sheet of paper or a few centimeters of air, and do not penetrate deeply into matter.

Beta rays consist of fast-moving electrons and can penetrate slightly farther than alpha rays, but can be stopped by a few millimeters of aluminum.

Gamma rays are a form of electromagnetic radiation (like x-rays), and are extremely penetrating. They can pass through thick layers of material, including concrete and steel, and can only be fully stopped by several inches of dense material, such as lead or concrete.

X-rays have similar properties to gamma rays and can also penetrate deeply into matter, but typically have a lower energy and are less penetrating than gamma rays.

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The magnitude of the magnetic field is [tex]5.22 * 10^{-5}[/tex] Tesla if ion A travels in a semicircular path of radius 0.50 m at a speed of [tex]5.0 * 10^{6} m/s.[/tex]

To determine the magnitude of the magnetic field, we can use the formula for the magnetic force acting on a charged particle moving in a magnetic field: F = q * v * B * sin(θ)
Since the ion A is moving in a semicircular path, the angle θ between the velocity and magnetic field vectors is 90°, and sin(90°) = 1. In this case, the magnetic force F is equal to the centripetal force F_c, which is given by: [tex]F_c = m * v^2/r[/tex]
Here, m is the mass of the ion, v is its speed, and r is the radius of the path. We know the speed ([tex]v = 5.0 * 10^{6} m/s[/tex]) and the radius (r = 0.50 m).

[tex]q * v * B = m * v^2 / r[/tex]
Now, we can rearrange the equation to find the magnitude of the magnetic field (B):
B = (m * v) / (q * r)
Assuming ion A has a charge of [tex]+1.6 * 10^{-19} C[/tex] (which is the charge of a proton), and a mass of approximately [tex]1.67 * 10^{-27}[/tex] kg (which is the mass of a proton), we can plug in the given values to get:
[tex]B = (1.67 * 10^{-27} kg)(5.0 * 10^{6} m/s) / (+1.6 * 10^{-19} C)(0.50 m)[/tex]
[tex]B = 5.22 * 10^{-5} T[/tex]

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Resource recovery and reduction of solid wastes should start at the point of generation. So the correct option is a.

Resource recovery and reduction of solid wastes involve methods and practices aimed at minimizing the amount of waste generated, as well as recovering valuable resources from waste materials. The most effective and sustainable approach is to start the process of resource recovery and waste reduction at the point of generation, which is where waste is initially produced. This can include practices such as reducing waste generation through source reduction and waste prevention measures, reusing materials, recycling, and composting. By implementing waste reduction and resource recovery practices at the point of generation, such as in homes, businesses, and industries, we can minimize the environmental impact of waste disposal, conserve resources, and promote sustainability.

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The grinding of garbage is an acceptable method of garbage disposal.

Garbage disposal units, also known as garbage disposals or waste disposal units, are appliances installed under a kitchen sink that grind food waste into small particles that can be safely disposed of through the home's plumbing system.

This method of garbage disposal is a convenient way to dispose of food waste and can help to reduce the volume of garbage sent to landfills.

While there are some concerns about the environmental impact of garbage disposals, they are generally considered to be a safe and acceptable method of garbage disposal when used properly.

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The total work done by the two tugboats on the supertanker is 100,000,000 joules, to three significant figures.

To calculate the total work done by the two tugboats on the supertanker we need to know the force exerted by the tugboats and the distance over which they exerted the force. Let's assume that the force exerted by each tugboat was 500,000 newtons and that they pulled the supertanker distance of 100 meters.
The work done by each tugboat is given by the formula:
work = force x distance
So, the work done by each tugboat is:
work = 500,000 newtons x 100 meters = 50,000,000 joules
Since there are two tugboats, the total work done by both tugboats is:
total work = 2 x 50,000,000 joules = 100,000,000 joules

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The convert miles per hour to meters per second, we need to multiply by a conversion factor of 0.44704 1 mile = 1609 meters and 1 hour = 3600 seconds. So, the speed required to escape Earth's gravity in m/s would be. 2.5 × 104 miles per hour × 0.44704 m/s per mile per hour = 1.12 × 104 m/s.


The convert the escape velocity from miles per hour to meters per second, follow these steps Write down the given escape velocity 2.5 × 10^4 miles per hour. Convert miles to meters 1 mile = 1609 meters Convert hours to seconds 1 hour = 3600 seconds Now, use these conversion factors to convert the escape velocity 2.5 × 10^4 miles/hour * 1609 meters/mile * 1 hour/3600 seconds After performing the calculations, the escape velocity in meters per second is 1.1 × 10^4 m/s Option D

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We know the frequency of the radiation detected by the radio astronomers is 40.0 MHz, or 4.0 × 10^7 Hz. This frequency corresponds to the cyclotron frequency of the electrons spiraling in the magnetic field.

To determine the magnetic field strength inside the gas cloud, we can use the equation for the cyclotron frequency:
ω = qB/m

Where ω is the angular frequency, q is the charge of the particle (in this case, an electron), B is the magnetic field strength, and m is the mass of the particle.


We can rearrange the above equation to solve for B:

B = ωm/q

Substituting in the values we know:

B = (4.0 × 10^7 Hz) × (9.11 × 10^-31 kg) / (-1.6 × 10^-19 C)

B = -2.27 × 10^-5 T

So the magnetic field strength inside the gas cloud is approximately 2.27 × 10^-5 tesla, with the negative sign indicating that the field is pointing in the opposite direction of the electron's motion.
 To calculate the magnetic field strength inside the gas cloud, we will use the cyclotron resonance formula:
f = (e * B) / (2 * π * m_e)
where:
f = frequency (40.0 MHz)
e = elementary charge (1.602 × 10^-19 C)
B = magnetic field strength (what we need to find)
m_e = mass of an electron (9.109 × 10^-31 kg)

We will rearrange the formula to solve for B:
B = (2 * π * m_e * f) / e
Now, we can plug in the values:
B = (2 * π * (9.109 × 10^-31 kg) * (40.0 × 10^6 Hz)) / (1.602 × 10^-19 C)
B ≈ 3.61 × 10^-6 T

Therefore, the magnetic field strength inside the gas cloud is approximately 3.61 × 10^-6 Tesla (T).

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Using the equation I = /, where is the torque applied to the item and is the consequent angular acceleration, one may calculate the moment of inertia of a given object.

I = 46 Nm / 40 rad/s², which can be written as I = 1.15 kg.m², is the result of substituting the provided numbers into the formula. A result of this is that the object's moment of inertia is 1.15 kg/m². The distribution of mass within the object and its shape both affect the moment of inertia, which is a measurement of an object's resistance to rotational motion. The stiff body spinning about a fixed axis is covered by the formula presented here.

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The phenomenon described is known as the photoelectric effect. It takes place whilst a beam of mild (radiation) of a certain frequency or energy (wavelength) strikes a metal surface and causes electrons to be emitted from it.

The photoelectric effect is a phenomenon wherein electrons are emitted from a fabric whilst it's far uncovered to electromagnetic radiation, along with light. This effect was first determined by using Heinrich Hertz in 1887 and changed into later defined via Albert Einstein in 1905, for which he become presented the Nobel Prize in Physics in 1921.

According to Einstein's clarification, mild consists of particles known as photons, which bring energy. whilst a photon strikes an atom in the cloth, it transfers its power to an electron, that could then be emitted from the material if the strength of the photon is extra than the binding power of the electron to the material. The emitted electrons are referred to as photoelectrons.

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The two ways that inertia affect the motions of the planets are:

B. It keeps the planets from flying off into space, out of the solar system.

C. It causes the planets to keep moving in the same direction as they did when they formed.

Inertia helps to keep planets in their orbits around the Sun, preventing them from flying off into space. As the planets move around the Sun, they are constantly pulled by the Sun's gravity towards the center of their orbit. However, due to their inertia, they continue to move forward, and the resulting combination of the inward pull of gravity and the outward motion due to inertia causes the planets to move in stable, elliptical orbits.

The planets formed from a cloud of gas and dust that was rotating in a particular direction. Due to the conservation of angular momentum, this rotation was transferred to the planets as they formed, causing them to continue to rotate in the same direction as they did when they formed. This is an example of how inertia affects the motion of the planets.

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According to the question the new resonant frequency will be larger than it was before.

Frequency is a measure of how often a given event or phenomenon occurs, typically measured as the number of times it occurs in a given period of time. It is usually expressed as the number of occurrences per unit of time, such as per second, minute, day, week, or year. Frequency is an important concept in many areas of physics, mathematics, and engineering.

The resonant frequency of a stretched string is determined by its length and tension. When the distance between the two bridges is increased, the length of the string is increased and the resonant frequency will also increase. Therefore, the new resonant frequency will be larger than it was before.

Therefore, the correct option is C
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The average change in momentum for the car during the trip is 8400 kg·m/s.

What is Momentum?

Momentum is a vector quantity, meaning it has both magnitude and direction. The direction of momentum is the same as the direction of velocity, and its magnitude is proportional to both the mass and the velocity of the object.

Then, we calculate the final momentum of the car during the remaining 3 hours:

Final momentum during the remaining 3 hours = mass × final velocity during the remaining 3 hours = m × v2

Now, we can calculate the average change in momentum:

Average change in momentum = Final momentum - Initial momentum

= (Final momentum during the first 2 hours + Final momentum during the remaining 3 hours) - Initial momentum

= [(m × v2) + (m × v2)] - (m × v1)

= 2m × v2 - m × v1

Plugging in the given values:

Mass of the car (m) = 1400 kg

Initial velocity (v1) = 32 m/s

Final velocity during the first 2 hours (v2) = 38 m/s

Average change in momentum = 2m × v2 - m × v1

= 2 × 1400 kg × 38 m/s - 1400 kg × 32 m/s

= 53200 kg·m/s - 44800 kg·m/s

= 8400 kg·m/s

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The detention time in the sedimentation process would be 45 minutes when one basin is out of service and the plant is operating at its maximum flow rate.

To calculate the detention time in a sedimentation basin, we need to know the volume of the basin and the flow rate of the plant.

The volume of one basin can be calculated as:

Volume = length x width x depth = 160 ft x 40 ft x 12 ft = 76,800 cubic feet

Since one basin is out of service, the effective volume of the system is 3/4 of this, or:

Effective volume = 3/4 x 76,800 cubic feet = 57,600 cubic feet

To calculate the detention time, we need to divide the effective volume by the flow rate of the plant.

Flow rate = 12.5 MGD = 18,150 cubic feet per hour

Detention time = effective volume / flow rate

Detention time = 57,600 cubic feet / 18,150 cubic feet per hour = 3.17 hours

Since there are 60 minutes in an hour, the detention time in minutes is:

Detention time = 3.17 hours x 60 minutes per hour = 190.2 minutes or approximately 190 minutes.

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For a 240-volt circuit with an 80-ohm resistor attached across it: 240 volts divided with 80 ohms equals current (I). 30 amps represents a unit of current (I).

So we have the value of v, which is equal to 24 volts, and the number of r. This is equivalent to 12 home, thus we have the value of i, which is equal to 2 ampere. So that's the solution, alternatively you can say that the voltage inside the wiring is 2.

Ohm's Law (E = Ar) is a ratio used in electrical circuits to determine the connection among voltage, current, and resistance. The entire formula is E = I × R, where E equals volts, I equals flow (in amp), and R equals resistance.

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The statement" counters can count past their preset values" is regarded to be true. This is known as overflow, where the counter will continue counting from zero after it has reached its maximum preset value.

It is true that counters can count past their preset values. In many systems, once a counter reaches its preset value, it resets to its initial state and continues counting from there. This process is called overflow or rollover, and it allows counters to keep track of counts beyond their preset limits.

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Rf value, or ratio to front value, is a numerical representation of the distance traveled by a compound in relation to the distance traveled by the solvent front in a thin layer chromatography experiment.

It is calculated by dividing the distance traveled by the compound by the distance traveled by the solvent front. The Rf value is a useful tool in identifying and comparing compounds, as it is characteristic of each compound and can be used to distinguish between them.
Rf value, also known as the ratio to the front, is a term used in chromatography. It represents the distance a component travels on the chromatography medium relative to the distance traveled by the solvent front. It is calculated by dividing the distance the component traveled by the distance the solvent front traveled. This value helps in identifying components in a mixture based on their relative movement through the chromatography medium.

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The amount of color in water should be less than 5 color units. The amount of color in water is measured in color units (CU) and indicates the level of organic material present in the water. The correct answer is a.

The maximum allowable color level in drinking water is typically set by regulatory agencies and may vary depending on the source and treatment process. However, in general, the amount of color in water should be less than 5 color units to ensure that the water is aesthetically pleasing and does not contain excessive amounts of organic material.

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False. In a balanced 3 wire wye circuit, the grounded neutral conductor is not considered a current carrying conductor. The neutral conductor carries only the unbalanced current resulting from the difference in the currents flowing through the three phase conductors.

The neutral conductor is grounded to provide a reference point for the voltage of the circuit, and to provide a path for the unbalanced current to return to the source.

In a balanced 3 wire wye circuit, the three phase conductors carry equal currents that are 120 degrees out of phase with each other. The voltages of the three phase conductors also differ by 120 degrees, and when they are connected to a load, they produce a balanced three-phase voltage.

The grounded neutral conductor in a 3 wire wye circuit is typically connected to earth ground at the transformer or generator supplying the circuit. The purpose of grounding the neutral conductor is to provide a reference point for the voltage of the circuit, and to provide a path for the return of unbalanced currents. Unbalanced currents can occur when the three phase loads are not equal or when there are single-phase loads connected to the circuit.

When the three-phase loads are balanced, the neutral conductor carries only the unbalanced current, which is the difference in current between the three phase conductors. The magnitude of the unbalanced current is typically small compared to the phase currents, and the neutral conductor is not considered a current-carrying conductor under normal operating conditions.

However, if the circuit becomes unbalanced due to a fault or other abnormal condition, the neutral conductor can carry significant currents that can cause overheating and other problems. For this reason, the neutral conductor must be sized appropriately to handle the maximum expected unbalanced current, and the grounding system must be designed to detect and clear faults quickly.

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The statement that "all reversible heat engines cycles have the same thermal efficiency when operating between the same two reservoirs" is not correct.

While reversible heat engines have the highest possible efficiency, the efficiency can vary depending on the specific engine and the temperature of the reservoirs. Additionally, the statement that "energy transfer by work is more valuable than energy transfer by heat" is also not correct. Both types of energy transfer are important and valuable in different contexts. Finally, the other three statements are correct: isolated systems cannot generate entropy, the efficiency of a reversible heat engine is affected by the temperature of the reservoirs, and a sudden expansion can generate irreversibility.

The statement that is not correct is: "because of the definition of isolated system, an isolated system does not have the ability to generate entropy." An isolated system can generate entropy internally, but it does not exchange energy or matter with its surroundings. The other statements are accurate descriptions of thermal efficiency and properties of heat engines.

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The lowest stage of ingesting water constituent that may be reliably measured in an permitted laboratory is called the method detection limit (MDL).

The MDL is the minimum concentration of a particular contaminant that may be as it should be detected and quantified using a selected analytical method. This restrict is decided via a sequence of laboratory experiments that establish the bottom awareness of a contaminant that may be detected with a high degree of certainty.

The MDL is an important parameter in water exceptional testing, as it provides a basis for assessing the accuracy and precision of analytical strategies, and enables to make certain that water trying out outcomes are dependable and consistent.

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The two processes for which the entropy of the system increases (ΔS>0) are I. Condensing water vapor and IV. Subliming dry ice.

In both these processes, the system undergoes a change from a less ordered state to a more ordered state, which leads to an increase in entropy. In contrast, in process II. Heating hydrogen gas from 60° C to 80° C, the system becomes more disordered as the molecules move faster and the distribution of energy becomes more random, leading to a decrease in entropy. Similarly, in process III. Forming sucrose crystals from a supersaturated solution, the system becomes more ordered as the molecules come together in a specific arrangement, leading to a decrease in entropy.

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To find the potential difference across the coil at this moment, we can use the formula:

V = L di/dt + R i

where V is the potential difference, L is the inductance, di/dt is the rate of change of current, R is the resistance, and i is the current.

Plugging in the given values, we get:

V = (440 m H)(3.60 A/s) + (3.25 ohms)(3.00 A)
V = 1.584 V + 9.75 V
V = 11.334 V

Therefore, the potential difference across the coil at this moment is 11.334 volts.
Hi! To calculate the potential difference across the coil, you need to consider both the resistive and inductive components.

For the resistive part, use Ohm's Law: V = I * R, where V is the voltage, I is the current, and R is the resistance.

V_resistive = 3.00 A * 3.25 ohms = 9.75 V

For the inductive part, use the formula: V = L * (dI/dt), where V is the voltage, L is the inductance, and (dI/dt) is the rate of change of current.

V_inductive = 440 mH * 3.60 A/s = 0.440 H * 3.60 A/s = 1.584 V

Now, sum up the resistive and inductive voltages to get the total potential difference across the coil:

V_total = V_resistive + V_inductive = 9.75 V + 1.584 V = 11.334 V

The potential difference across the coil at this moment is 11.334 V.

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Crystal form, hardness, cleavage, color, and density. Option D

Crystal form is the most useful physical property for mineral identification, as it is unique for each mineral and can be easily observed with the eye. Hardness is the next most useful property, as it can be tested with common tools like fingernails. Cleavage, or the way a mineral breaks along planes of weakness, can also provide important clues to identification.

Color is generally considered a less reliable indicator of mineral identity, as many minerals can have a wide range of colors. Density can be helpful in distinguishing between similar-looking minerals, but is not always a definitive characteristic.

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The combination of processes that result in the movement of water from the earth's surface into the atmosphere is known as the hydrologic cycle.

The mix of cycles that outcome in the development of water from the world's surface into the environment is known as the water cycle or hydrologic cycle. The water cycle comprises of a few stages, including vanishing, happening, buildup, precipitation, penetration, and spillover. Dissipation happens when water changes from a fluid state to a gas because of intensity. Happening is the interaction by which water is set free from plants into the environment.

Buildup happens when water fume in the climate cools and changes back to a fluid state, framing mists. Precipitation happens when water tumbles from the climate to the world's surface as downpour, snow, slush, or hail. Penetration is the cycle by which water saturates the ground, while spillover is the progression of water over the world's surface. The water cycle is crucial for the world's biological systems and assumes an imperative part in supporting life in the world.

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If fusion reactions in the Sun suddenly shut off, we would be able to tell by observing a decrease in the Sun's energy output and changes in its surface features.

Fusion reactions in the Sun's core are responsible for producing the energy that the Sun emits as light and heat. If these reactions were to suddenly shut off, the Sun's energy output would decrease, and we would observe a reduction in the amount of light and heat reaching Earth. We could measure this decrease in energy output using instruments such as satellites and telescopes. In addition to changes in the Sun's energy output, we would also expect to see changes in its surface features. The Sun's surface is constantly in motion due to the convection of its plasma, which is driven by the energy produced in the core. If the energy production were to stop, the convection would also stop, leading to changes in the Sun's magnetic field and surface features such as sunspots and solar flares. We could observe these changes using telescopes that are designed to capture images of the Sun's surface.

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Option b. Sandwich and salad mixtures should be placed in shallow pans at a depth or height not greater than 2 inches to accelerate the rapid cooling of the food.

Legitimate cooling of food is a fundamental part of food handling and is important to forestall the development of destructive microbes. Shallow dish cooling is a strategy used to quickly cool food things like sandwich and salad combinations. By utilizing shallow dish that are no more profound than 2 inches, the food is presented to rapidly more surface region and cools more.

While cooling food, it means quite a bit to cool it from 135°F to 70°F in something like two hours and from 70°F to 41°F or underneath inside four extra hours to stay away from the peril zone where microbes can quickly duplicate. Utilizing shallow container to cool food to the protected temperature zone all the more rapidly can assist with forestalling the development of hurtful microbes and decrease the gamble of foodborne ailment.

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I am a field physicist and I perform QA measurements of various types of X-ray units. Due to recent changes in legal requirements in my country, we have to provide the radiation output value for each unit tube measured in m Gy MA's at 1 meter from focal spot) at filtration of 2,5 mm Al equivalent. a. True

This unfortunately cannot be directly achieved for interventional radiology units, some CTs and occasionally other types of X-ray units. A filter of 2 mm of aluminum will absorb the soft, or less penetrating, radiation. Aluminum is often used as a filter in radiography because it effectively absorbs low-energy, soft X-rays, while allowing more penetrating, higher-energy X-rays to pass through. This helps improve image quality and reduce patient exposure to unnecessary radiation.

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When capacitors are connected in series, the potential difference across each capacitor is different. The capacitor with the smallest capacitance will have the greatest potential difference across it.

This is because the total charge on each capacitor is the same, but the smaller capacitor will store less charge and thus experience a larger voltage drop. In other words, the voltage drop across each capacitor is proportional to its capacitance, and the capacitor with the smallest capacitance will experience the greatest voltage drop. So, the answer to your question is that the capacitor with the smallest capacitance has the greatest potential difference across it.

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(a) If the jet is approximated as an inviscid line source, locate at  0.05308m stagnation point on the wall.(b) 0.1067m vertically will the jet flow extend into the stream.

The sink strength is related the volume flow to the depth into the flat surface,

m= θ/2πb

θ = jet volume flow

b = depth into paper

m= 0.4/2×3.14×1

m= 0.0637m²/s

(a) The stagnation point from the wall,

v₀ = velocity of water along the axis.

a = m/v₀

a= 0.0637/1.7

a = 0.05308m

(b)The jet flow vertically exert into the stream

L= 2a

L = 2 ×0.05308

L = 0.1067m

Therefore, If the jet would be approximated as an inviscid line source, locate at  0.05308m stagnation point on the wall. 0.1067m vertically would be the jet flow extend into the stream.

The complete question is,

air flows at 1.2 m/s along a flat surface when it encounters a jet of air issuing from the horizontal wall at point a, as in fio p8.16. the jet volume flow is 0.4 m/s per unit depth into the paper. if the jet is approximated as an inviscid line source, (a) locate the stagnation point s on the wall. (b) how far vertically will the jet flow extend into the stream?

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Answer:

ω = 2 π f = 2 π / P

The second hand makes 1 revolution every 60 sec (P  = 60 sec)

ω (second hand) = 2 π / 60 sec = .1047 / sec

The second hand makes 60 revolutions for 1 revolution of the minute hand since the minute hand revolves once every hour

ω (minute hand) = 1/60 * .1047 = .001745 / sec

The minute hand makes 60 revolutions in 1 hour or 12 * 60 = 720 revolutions for 1 revolution of the hour hand

.001745 / 720 = 2.424 * 10E-6 / sec