An advertisement for a portable electrical generating unit claims that the unit’s diesel engine produces 28,000 hp to drive an electrical generator that produces 30 MW of electrical power. Is this possible? Explain.

Q: Staning from rest, a car of mass 1700 kgreaches a speed of 15 ms in 7.8 s What is the average power…

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Q: 3. Consider a 65-kg object moving at a speed of 12 m/s. Use work and energy to solve for the…

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Q: The rate at which work is done is known as .

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Q: A model train's electric motor accelerates it from a standstill to a speed of 0.740 m/s in 25.0 ms.…

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Q: How much energy is needed to change the speed of a 1200 kg of a car from 15.0 m/s to 30.0 m/s?

A: Work energy theorem We know from the conservation of energy law that energy can neither be created…

Q: A machine gun fires 360 bullets per minute. Each bullet has a mass of 5 grams and travels at 600…

A: Given: A machine gun fires 360 bullets per minute. mass each bullet of 5 grams  v = 600 m/s   To…

Q: A cheetah can accelerate from rest to 6.4 m/s (about 11 m/h) in 1.0 seconds. How much average power…

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Q: 4. A runner has 250 J of KE. A short time later, he has 150 J of KE. How much Work was done on him?

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Q: kg mass starts from rest at point A and moves along the x-axis subject to the potential energy shown…

A: Given: Mass of object (m) = 2.3 kg.

Q: You toss a 0.10-kg ball straight up at a speed of 2.0m/s. How much work is done by gravity when the…

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Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: The rate  of doing work is called power.

Q: 10. Using the general gravitational potential energy function (U= -GmM/r) as a guide, how much work…

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Q: A typical wind turbine extracts 40% of the kinetic energy of the wind that blows through the area…

A: Given Data:The mass of the wind passing the blades each second is Speed Kinetic energy is given by…

Q: Consider humans generating electricity by pedaling a device similar to a stationary bicycle.…

A: The number of people in the group,

Q: A motorcycle at rest has 550 J of Work done on it. What is its final KE?

A: Given data:  Initial velocity (v0) = 0 m/s Work done (W) = 550 J Required: Final kinetic Energy

Q: A 190 g object is dropped from a height of 7 meters. Calculate the potential and kinetic energy of…

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Q: (a) What is the kinetic energy of a 1,580.0 kg car with a velocity of 79.9 km/h? (b) How much work…

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Q: 8. A block is moving with 52.0 J of KE. A 12.0N force pulls the block straight forward for 3.00 m.…

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Q: A cheetah can accelerate from rest to 6.4 m/s (about 16 m/h) in 1.2 seconds. How much average power…

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Q: Your friend wants to solve the world’s energy problems by inventing a device that will deliver ten…

A: The world or the universe works on some conservation laws. The energy conservation says that energy…

Q: How much work is required to throw a ball with a mass of 0.46 kg 33.1 m/s? Assume the ball starts at…

A: Given Mass of ball = 0.46 kg Initial velocity of ball = 0 m/s Final velocity of ball = 33.1 m/s We…

Q: A car of 1100 kg mass changes the speed from 5 m/s to 6 m/s. What is the work done (in J) by the car…

A: Given, Mass of car m = 1100 Kg Initial speed of car u = 5 m/s Final speed of car v = 6 m/s

Q: A ball of mass 5 kg is attached to a spring that is compressed an amount 0.05m with spring constant…

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Q: A person in good physical condition can put out 100 W of useful power for several hours at a…

A: We know that one people produces an output of 100 W so the number of people that can produce 5 kW of…

Q: A huge truck of mass 10800 kg is moving with the same kinetic energy as a 1200 kg small car moving…

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Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

A: Initial kinetic energy is,  K1=12mv12 Final kinetic energy is   K2=12mv22 Given that v2=14v1 So,…

Q: A car of mass 1500 kg is initially travelling at a speed of 10 m/s. The driver then accelerates to a…

A: At intial  Velocity of the car = 10m/s Mass of the car =1500 kg At final  Velocity of the car =25…

Q: You push down on a 4.0 N box against the floor for 2 minutes. How much work was done? How much power…

A: Answer Given  Weight of box w = 4 N Time t = 2 minutes

Q: 2. An electric drive features a 24 kWh battery pack and has a range of 170 km at a constant speed of…

A: We will answer the question by using expression relating power and energy. The details are as…

Q: Three runners, each 70 kg, leave the starting line at the bottom of a hill and race to the top of…

A: Given data: Mass (m) = 70 kg Runners starts from bottom of hill and reached at top of the hill  Race…

Q: Q2. Consider a river flowing toward a lake at an average velocity of 3 m/s at a rate of 500 m/s at a…

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Q: What is the kinetic energy of a 1200 kg car whose velocity is 40 km/hr?

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Q: An electric motor is rated to have a maximum power output of 0.79 hp. If this motor is being used to…

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Q: A 100-W light bulb is left on for 10.0 hours. Over this period of time, how much energy was used by…

A: Given that,Power of bulb,P=100 wattTime for which bulb is left turn on, t=10 hours=10×3600 sec=36000…

Q: A 700 N Marine soldier in basic training course climbs a 10.0 m vertical rope at a constant speed in…

A: Given, Weight of Marine soldier =W=700 N Height of climbing=h=10.0 m Time is taken by the soldier to…

Q: A cheetah can accelerate from rest to 7.4 m/s (about 17 m/h) in 1.1 seconds. How much average power…

A: The correct choice of answer is option (a) i.e. 1300 W

Q: The work done against gravity in taking 5000 grams mass at 39.37 inches height in 1 sec will be None…

A: The work done against gravity in taking 5000 grams mass at 39.37 inches height 1 sec will be

Q: A water fountain uses 125 Watts of power each hour. It is run 24 hours each day for 7 days. If…

A: The formula for the amount of energy consumed by the fountain is:

Q: In the figure shown, if the mass (m-6 Kg) is moving with constant speed and traveled a distance…

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Q: Advanced Physics Question

A: Here ,  We have given  refractive index (n) So, For the refractive  index = c/v So V=c/n So, Lesser…

Q: Please answer this question in detail, Don't use chatgpt.

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Q: 25. A donkey is pulling a sled at a velocity of 3.5m/s. If the donkey’s power output is 890 W, what…

A: Let F be the force that the donkey exerts on the sled. Given that a donkey is pulling a sled at a…