consider an ideal brayton cycle executed between the pressure limits of 1200 kpa and 100 kpa and temperature limits of 20 c and 1000 c with argon as the working fluid. the temperature at the exit of the compressor in celsius is

The spring constant of spring is 39.9 N/m and the length of the string is about 47.5 meters.

Mass of the air-track glider (m) = 200 g = 0.2 kg

Displacement of the air-track glider (x) = 10.0 cm = 0.1 m

Number of oscillations (n) = 10

Time taken for 10 oscillations (t) = 12.0 s

T = 2π√(m/k)

where, T is the time period of oscillation. Substituting the given values, we get:

12 s = 2π√(0.2 / k)

Solving for k, we get:

The spring constant is 39.9 N/m.

Mass of the ball (m) = 200 g = 0.2 kg

Angle of displacement (θ) = 8.00°

Number of oscillations (n) = 10

Time taken for 10 oscillations (t) = 12.0 s

T = 2π√(L/g)

where, T is the time period of oscillation and g is the acceleration due to gravity. Substituting the given values, we get:

12 s = 2π√(L/9.8)

Solving for L, we get:

L = (12/2π)² × 9.8 = 47.5 m

Therefore, the length of the string is 47.5 meters.

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The kinetic molecular theory can be used to explain each of the experimentally determined gas laws. The pressure of a gas results from collisions between the gas particles and the walls of the container. Each time a gas particle hits the wall, it exerts a force on the wall.

Answer:

.

C. Almost all the current flows through a part of a parallel circuit with very low resistance, instead of through the rest of the circuit.

Earth would be the size of a pea on a scale where the Sun is the size of a little exercise ball and Jupiter is the size of a golf ball since Jupiter is significantly larger than Earth.

In this scale, Earth would be the size of a pea if the Sun were the size of a small exercise ball and Jupiter was the size of a golf ball. This is because Earth, which has a diameter of about 12,742 kilometres compared to the Sun's diameter of around 1.4 million kilometres and Jupiter's diameter of approximately 140,000 kilometres, is far smaller than both the Sun and Jupiter. Because of their enormous proportions, celestial bodies' relative sizes in the cosmos might be difficult to comprehend, but making comparisons like these can help put things into perspective and further comprehension.

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Based on current evidence, planetary systems appear to be relatively common.

Current evidence suggests that regular physical activity can improve physical and mental health, reduce the risk of developing chronic diseases, and promote well-being. Studies have found that regular exercise can reduce stress, improve mood, improve sleep quality, and increase energy levels. Exercise can also reduce the risk of developing heart disease, stroke, diabetes, and certain types of cancer. Additionally, regular physical activity can help to maintain a healthy weight, reduce the risk of osteoporosis, and improve cognitive function.

Studies using data from the Kepler Space Telescope suggest that around 70% of stars have at least one planetary system, with some estimates as high as 90%. This means that for every 10 stars, 7 of them could potentially have planetary systems orbiting them. This suggests that planetary systems are relatively common in the Universe.

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To calculate the missing values in the table, we can use the formulas:

Using these formulas, we can fill in the missing values:

Power(W)          Work Done(J)    Time Taken(s)

For a,. 3000       90000                30

For b,. 20            100                      5

For c,. 50            100                      2

For d. 700           245                     0.35

For e. 25             1875                     75

For f. 50000       500000              10

For g. 150            450                      3

For h. 0.5            10                         20

What is power?

Power is the rate at which work is done or energy is transferred. Mathematically, power is defined as the amount of work done or energy transferred per unit time. The unit of power is the watt (W), which is equal to one joule of work per second.

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To calculate the missing values in the table, we can use the formulas:

Power = Work Done / Time Taken

Work Done = Power x Time Taken

Time Taken = Work Done / Power

Using these formulas, we can fill in the missing values:

Power(W)          Work Done(J)    Time Taken(s)

For a,. 3000       90000                30

For b,. 20            100                      5

For c,. 50            100                      2

For d. 700           245                     0.35

For e. 25             1875                     75

For f. 50000       500000              10

For g. 150            450                      3

For h. 0.5            10                         20

What is power?

Power is the pace at which labour or energy is done or transferred. Power is described mathematically as the quantity of labour done or energy moved per unit time. The watt (W) is the measure of electricity, and it equals one joule of work per second.

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The percent change in the kinetic energy of the system is [(0.5*(12100 + 4790)*1722) - 5.58 x 106] / (5.58 x 106) x 100% = 4.41%.

The 12100 kg railroad car is initially travelling at a speed of 19.0 m/s and has a kinetic energy of KE = 0.5*12100*1902 = 5.58 x 106 Joules. The 4790 kg load is dropped onto the car from rest, so its initial kinetic energy is 0.

When the load is dropped onto the car, the two objects collide and their velocities after the collision will be equal. Therefore, the final speed of both the railroad car and the load will be v = (12100*19 + 4790*0) / (12100 + 4790) = 17.2 m/s. The percent change in the kinetic energy of the system is [(0.5*(12100 + 4790)*1722) - 5.58 x 106] / (5.58 x 106) x 100% = 4.41%.

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The structure described by the scientist, which is an oily sphere with an inner fluid, is most likely a lipid vesicle.

Lipids are a class of macromolecule that are hydrophobic and non-polar, which means that they do not cling to water. To reduce their exposure to the polar water molecules when lipids are in water, they often group together. This may result in the development of lipid vesicles, which have an interior space that is sealed off from the outside world by a lipid bilayer. Since they can self-assemble in water and provide a safe space for molecules to interact, lipid vesicles have been suggested as a potential precursor to cells. This is comparable to how basic organic molecules may have produced lipid vesicles during the first stages of life on Earth, which later gave rise to the first cells.

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When a light bulb used in a slide projector draws a current of 6 amperes while operating on 120 volts, the power consumed by the light bulb in watts is 720, and the resistance of the light bulb in ohms is 20. Thus, the correct option is B.

When we know that the current drawn by a light bulb is 6 amperes and the voltage applied to it is 120 volts, we can easily calculate the resistance of the light bulb, as follows:

Resistance (R) = Voltage (V) / Current (I)

here, V = 120V and I = 6A

Therefore, the resistance of the light bulb is:

R = V/I = 120/6 = 20 Ohms

The formula used to calculate the power (P) consumed by a light bulb is:

P = V × I

Here, the voltage (V) applied to the light bulb is 120 volts and the current (I) drawn by the light bulb is 6 amperes. So, the power consumed by the light bulb is:

P = 120 × 6 = 720 watts

Hence, the power consumed by the light bulb in watts is 720, and the resistance of the light bulb is 20 ohms.

Therefore, the correct option is B.

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The diameter of the nichrome wire should be 0.71 times the diameter of the copper wire in order for the electric field strength to be the same in both wires.

To determine the diameter ratio of nichrome wire to copper wire, we can use the equation for electric field strength (E = V / d), where V is the potential difference and d is the distance between the wires.

Since the potential difference between the wires is the same for both wires, we can set the electric field strength for the two wires equal to each other: E_nichrome = E_copper

Using the equation for electric field strength, we can rewrite this as: V_nichrome / d_nichrome = V_copper / d_copper

We know that the diameters of the wires are inversely proportional to their respective distances from each other, so we can rewrite this equation as: V_nichrome / (k * d_copper) = V_copper / d_copper, where k is the ratio of the diameter of the nichrome wire to the diameter of the copper wire.

Solving for k, we get: k = (V_nichrome / V_copper)^(1/2)

Substituting the given values, we get: k = (60 / 40)^(1/2) = 0.866

Therefore, the diameter of the nichrome wire should be 0.71 times the diameter of the copper wire (since 1 / 0.866 = 1.155, and 1.155 * diameter of copper wire = diameter of nichrome wire).

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According to the International System of Units, Newton (N) is used to measure force. Thus Newton is the correct response.

A force is defined as a physical quantity that causes a change in the state of motion of a body.

Force is a vector quantity that has both magnitude and direction.

Newton is the unit of force in the International System of Units (SI).

One newton (N) is the amount of force required to give a mass of 1 kg and an acceleration of 1 m/s².

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The cause of the phenomenon is  because the sound waves are spread out over a large area. Option 1 is correct.

In this case, the sound waves are spread out over a large area. This is due to the fact that sound waves propagate outward from their source in all directions, creating a spherical wavefront that expands as it moves away from the source. As the wavefront expands, the same amount of sound energy is distributed over a larger and larger area, causing the sound intensity to decrease with distance from the source. This is known as the inverse square law, which states that the intensity of a sound wave decreases proportionally to the square of the distance from the source. Therefore, the farther away you are from the source of the sound, the weaker it will be.

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Option 2) is true. If the mass of the black hole doubles, then the Schwarzschild radius of the black hole also doubles.

The Schwarzschild radius of a black hole depends on its mass. When the mass of the black hole changes, its Schwarzschild radius is also affected. Specifically, if we double the mass of a black hole, the Schwarzschild radius of the black hole also doubles. The Schwarzschild radius is defined as the distance from the center of a black hole at which an object would need to be in order to escape its gravitational pull. It is represented by the equation Rs = 2GM/c² where Rs is the Schwarzschild radius, G is the gravitational constant, M is the mass of the black hole, and c is the speed of light.

The formula implies that Schwarzschild radius depends on the mass of the black hole.Therefore, if the mass of the black hole doubles, then the Schwarzschild radius of the black hole also doubles. Hence, option 2 is the correct statement.

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Answer:

Here you go, hope this helps you pass :)

Explanation:

You're welcome.

The tetherball's speed can be calculated as 4.23m/s.

The question asks for the speed of a tetherball on a 2.1 m string which is making an angle of 56 degrees with the vertical as it moves around the pole in a horizontal plane. The mass of the ball is 1.3 kg.

We can use the equation v2 = 2gLsin θ to solve for the speed. Where v is the speed of the ball, g is the acceleration due to gravity (9.8 m/s2), L is the length of the string (2.1 m), and θ is the angle (56 degrees).

Using this equation, we can solve for the speed of the tetherball: v = 4.23 m/s

Hence, the tetherball's speed can be calculated as 4.23m/s

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The relationship between the velocity of a fluid and the size of the sediment that the fluid carries is directly proportional.

Higher velocity fluids are capable of carrying larger sediments while lower-velocity fluids are capable of carrying smaller sediments. This is due to the fact that higher-velocity fluids have greater kinetic energy, which allows them to overcome the gravitational forces that hold larger sediments in place.

A fluid is a substance that is able to flow and take on the shape of the container it is placed in, with the ability to deform under applied shear stress. Examples of fluids include liquids and gases. In contrast, solids maintain their shape and volume under applied stress.

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The speed of water at the point with a radius of 0.150 m is 16.97 m/s while the radius of the pipe at the point where the water speed is 2.90 m/s is 0.0682 m.

a) To find the speed of the water at a point of a circular pipe where the radius is 0.150 m if the water is flowing into this pipe at a steady rate of 1.20 m³/s, we'll use the equation;

Q = A₁V₁ = A₂V₂ Where Q = Flow rate (m³/s)A₁ = Cross-sectional area at one point (m²)V₁ = Velocity of water at one point (m/s)A₂ = Cross-sectional area at a second point (m²)V₂ = Velocity of water at the second point (m/s)At one point in the pipe, the radius is 0.150 m.Therefore, the cross-sectional area, A₁ is given by:

A₁ = πr₁² = π (0.150 m)² = 0.0707 m²Given that the water is flowing into the pipe at a steady rate of 1.20 m³/s, we can write;Q = A₁V₁1.20 m³/s = 0.0707 m² V₁V₁ = 1.20/0.0707V₁ = 16.97 m/s.Therefore, the speed of water at the point with a radius of 0.150 m is 16.97 m/s.

b) To find the radius of the pipe at a point where the water speed is 2.90 m/s, we'll use the same equation as in part (a);Q = A₁V₁ = A₂V₂At a second point in the pipe, the water speed is 2.90 m/s.Given that the water completely fills the pipe, we know that the volume flow rate, Q will remain constant at 1.20 m³/s.So, we have:

Q = A₁V₁ = A₂V₂We know that A₁ = πr₁²So, Q = πr₁²V₁Also, we know that A₂ = πr₂²So, Q = πr₂²V₂Since the volume flow rate is constant, we can equate both equations,πr₁²V₁ = πr₂²V₂Dividing both sides of the equation by π, we have;r₁²V₁ = r₂²V₂But we are interested in finding the radius of the pipe at the second point, r₂.So, we can express r₁ in terms of r₂ using the relationship between the cross-sectional areas;

A₁ = A₂r₁² = (A₂/A₁)²r₂²r₁ = r₂ (A₂/A₁)^(1/2).We know that A₁ = πr₁²We can find A₂ using the fact that the water completely fills the pipe;

A₁V₁ = A₂V₂πr₁²V₁ = A₂V₂π(0.150 m)²(16.97 m/s) = A₂(2.90 m/s)A₂ = π(0.150 m)²(16.97 m/s)/(2.90 m/s)A₂ = 0.0707 m²

So,r₂ = r₁(A₂/A₁)^(1/2)r₂ = 0.150 m × (0.0707 m²/π)/(0.0150 m²)^(1/2)r₂ = 0.0682 m. Therefore, the radius of the pipe at the point where the water speed is 2.90 m/s is 0.0682 m.

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The given statement: "When a system can go from state 1 to state 2 by several different processes, the change in the internal energy of the system will be the same for all processes." is False.

It is incorrect to claim that if a system may shift from state 1 to state 2 through various processes, the shift in the internal energy of the system will be the same for all processes. This is due to the fact that internal energy is a state function that is dependent solely on the initial and final states of the system, and not on the path by which the system was transformed from one state to another. As a result, the alteration in the internal energy of a system moving from one state to another is not influenced by the process used to achieve the transition. So, it can be concluded that the given statement is False.

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The two protostars form at the same time, the 10MSun star will end its main-sequence life before the 0.5MSun star even completes its protostar stage, and 10MSun will be much more luminous than the 0.5MSun protostar. Thus, options C and E are correct.

More massive stars have shorter lifetimes because they burn through their nuclear fuel more quickly.

Therefore, the 10MSun star will end its main-sequence life before the 0.5MSun star even completes its protostar stage. Thus, option C is correct.

The luminosity of a star depends on its mass.

More massive stars have higher luminosities than less massive stars. Therefore, option E is correct.

Thus, options C and E are correct.

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The speed (at perigee) is 6.32 km/s and the speed at apogee is, 2.00 km/s.

a) To calculate the eccentricity of the orbit, you need to calculate the ratio of the difference between the perigee and apogee radii to the sum of the two radii. This can be calculated using the following equation:

eccentricity = (apogee radius - perigee radius) / (apogee radius + perigee radius).

Plugging in the given values, the eccentricity of the orbit is,

e = (100,000 - 10,000) / (100,000 + 10,000) = 0.91.

b) The semimajor axis of the orbit (in kilometers) can be calculated using the following equation:

semimajor axis = (perigee radius + apogee radius) / 2.

Plugging in the given values, the semimajor axis of the orbit is,

a = (10,000 + 100,000) / 2 = 55,000 km.

c) The period of the orbit (in hours) can be calculated using the following equation: period = 2π√(semimajor axis^3 / μ). Here, μ is the standard gravitational parameter which is 398,600 km^3/s^2. Plugging in the given values, the period of the orbit is T = 2π√(55,000^3 / 398,600) ≈ 25,000 hrs.

d) The specific energy of the orbit (in kilometers squared per second squared) can be calculated using the following equation: specific energy = (2 / perigee radius) - (1 / semimajor axis).

Plugging in the given values, the specific energy of the orbit is,

specific energy = (2 / 10,000) - (1 / 55,000) ≈ -0.0054 km^2/s^2.

e) The true anomaly at which the altitude is 10,000 km (in degrees) can be calculated using the following equation: true anomaly = arccos((perigee radius / semimajor axis) - 1). Plugging in the given values, the true anomaly at which the altitude is 10,000 km is v = arccos((10,000 / 55,000) - 1) ≈ 74.4°.

f) The radial velocity (vr) and the transverse velocity (v⊥) at the points found in part (e) (in kilometers per second) can be calculated using the following equations:

vr = √(μ / perigee radius) * cos(true anomaly) and v⊥ = √(μ / perigee radius) * sin(true anomaly). Plugging in the given values, the radial velocity at the point of 10,000 km altitude is vr = √(398,600 / 10,000) * cos(74.4°) ≈ 4.17 km/s and the transverse velocity is v⊥ = √(398,600 / 10,000) * sin(74.4°) ≈ 4.04 km/s.

g) The speed at perigee and apogee (in kilometers per second) can be calculated using the following equation:

speed = √(μ/ radius).

Plugging in the given values, the speed at perigee is,

speed (at perigee) = √(398,600 / 10,000) ≈ 6.32 km/s

The speed at apogee is,

speed (at apogee) = √(398,600 / 100,000) ≈ 2.00 km/s.

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A 37.5 kg box initially at rest is pushed 5.40 m along a rough, horizontal floor with a constant applied horizontal force of 150 N. If the coefficient of friction between box and floor is 0.300, the following can be found:

a. The work done by the applied force is equal to the product of the force and the displacement

Work = Fd = (150N)(5.40m) = 810 J.

b. The increase in internal energy in the box-floor system due to friction is equal to the work done by the friction force, Work done by friction = Frd = (μN)(5.40m) = (0.3)(37.5kg*9.8m/s²)(5.40m) = 546.1 J.

c. The work done by the normal force is zero because the normal force does not cause displacement,

Work done by normal force = 0.

d. The work done by the gravitational force is equal to the product of the gravitational force and the displacement, Work done by gravitational force = Fd = (mg)(5.40m) = (37.5kg*9.8m/s²)(5.40m) = 1817.9 J.

e. The change in kinetic energy of the box is equal to the work done by the applied force minus the work done by the friction and gravitational forces,

Change in kinetic energy = Work done by applied force - Work done by friction - Work done by gravitational force = 810 J - 546.1 J - 1817.9 J = -655 J.

f. The final speed of the box can be calculated using the equation

KE = 1/2mv2,

thus the final speed of the box is

v = sqrt(2KE/m) = sqrt(2(-655 J)/(37.5 kg)) = 1.62 m/s.

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When you change the frequency in the "Listen to a Single Source" tab of Sound Waves, the visual model will change in several ways.

Sound is a type of energy that travels through a medium in waves. These waves propagate in the form of longitudinal or compression waves, and they vibrate the particles in the medium through which they travel. Sound waves can travel through solids, liquids, and gases, but they do so at different speeds.

The amplitude (height of the wave) will change based on the volume of the sound, and the wavelength (length of the wave) will change based on the frequency.

As the frequency increases, the wavelength will become shorter and the amplitude will become higher. As the frequency decreases, the wavelength will become longer and the amplitude will become lower.
The Listen to a Single Source tab in Sound Waves is a useful tool for beginning your investigation into sound. When you adjust the frequency, the visual model changes.

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The work required to raise the elevator from the basement to the third floor is equal to the force times the distance moved. The work required is equal to (-pounds)(ft) = -foot-pounds.

We have to calculate the work required to raise the elevator from the basement to the third floor using the given data. In order to calculate the work, we need to determine the force required to lift the elevator.

This can be done using the equation: F = W + w x L

where, F is the force required to lift the elevator, W is the weight of the elevator, w is the weight of the cable per foot, and L is the length of the cable. F = 1500 + (0.4 × 75) = 1500 + 30 = 1530 pounds.

Therefore, the force required to lift the elevator is 1530 pounds. The work done to raise the elevator is given by the equation: W = F × d

where, W is the work done, F is the force required to lift the elevator, and d is the distance traveled by the elevator.

W = 1530 × 30 = 45,900 foot-pounds.

Therefore, the work required to raise the elevator from the basement to the third floor is 45,900 foot-pounds.

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The speed of a train that moves from a train station at 30 meters per second after 5 seconds and covers a distance of 100 m with an acceleration of ten meters per second square would be 80 m/s.

We can use the equation of motion to solve for the final velocity of the train:

v = u + at

where:

Substituting the values, we get:

v = 30 + 10(5)

v = 80 m/s

Therefore, the speed of the train after 5 seconds is 80 m/s.

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An appliance manufacturer that has redesigned its original electrical fan to make it more energy efficient means that the new fan will consume less electricity for the same amount of air circulation compared to the original fan.

This can result in several benefits such as: Lower electricity bills: As the new fan is more energy efficient, it will consume less electricity, which can lead to lower electricity bills for the consumer. Reduced environmental impact: By consuming less electricity, the new fan can reduce the overall demand for electricity, which can help to reduce the environmental impact associated with electricity generation. Longer lifespan: Energy-efficient fans tend to have a longer lifespan compared to less efficient models as they put less stress on the electrical components, which can result in fewer malfunctions and a longer lifespan. Improved performance: While the new fan consumes less electricity, it may still be capable of producing the same or better airflow compared to the original fan due to improvements in the design and technology used. Overall, making the new fan more energy efficient can result in several benefits for the consumer and the environment.

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The bottom of the tank is 30 feet in diameter and the groundwater level is 10 ft above the bottom of the tank. This means that the total force being exerted on the bottom of the tank is equal to the pressure of the water at 10 ft depth, multiplied by the area of the tank.

The pressure of water at 10 ft depth can be calculated using the formula: Pressure = Density of Water x Gravity x Depth

Therefore, the force exerted on the bottom of the tank is:

Where:

Therefore, the total force exerted on the bottom of the tank is: Force = 62.4 x 32.2 x 10 x 706.5 = 1358561.2 lbf.

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Answer: slightly more

Explanation:

it will be slightly less because it is partially taking away the heaviness from your natural weight. But it might also be slightly more because you are still kind of adding more weight onto the scale by putting more weight onto your toes making it heavier.

If the magnetic field steadily decreases from B to zero during a time interval t, the magnitude E of the induced emf is given by the formula; E = (Bx-y/t), where B is the magnetic field, x, and y are constants.

An induced emf is the voltage generated across a conductor when it moves through a magnetic field. It is also induced when there is a change in the magnetic field passing through a conductor.

The emf generated in a coil of wire is equal to the rate of change of magnetic flux through the coil. Magnetic flux is given by the formula: φ=B*A,

where -  B is the magnetic field strength and

           - A is the area of the coil.

If the magnetic field steadily decreases from B to zero during a time interval t, the change in magnetic flux is given by the formula:  Δφ=B*A = B*ΔA, where ΔA is the change in area over time Δt.

The induced emf E is given by the formula: E = (-N * Δφ)/Δt

Where N is the number of turns in the coil. If the magnetic field is steadily decreasing, then ΔB/Δt is constant, and the induced emf E is given by the formula:  E = (-N * B * ΔA/Δt) = (-N * B * x*y/t) = (Bx-y/t), where x and y are constants.

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c) the kinetic energy increases by more than a factor of three. A three-fold increase in an object's speed occurs. The kinetic energy rises by a factor of greater than three.

An object's kinetic energy (KE) is determined by the equation KE = 1/2mv2, where m is the object's mass and v is its velocity. An object's kinetic energy is multiplied by nine (32) when its velocity is raised by a factor of three. This is due to the fact that kinetic energy is inversely proportional to square of velocity, meaning that any change in velocity will have a bigger impact on kinetic energy.

It follows that if an object's speed is raised by a factor of three, its kinetic energy will also rise by a factor of three or more.

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