A car with mass of 1108 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ignore air resistance. The engine has a 22.0% efficiency, which means that 22.0% of the energy released by the burning gasoline is converted into mechanical energy. What is the average mechanical power output of the engine? 81.44 OkW
Q: 1. A car starts at rest, and ends up with 1500 J of KE. How much Work was done on it?
A: As per our guidelines, we are supposed to answer only first one question in case of multiple…
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A: work energy theorem Wnet=change in kinetic energyWnet=∆KEWnet=KEfinal-KEinitialWnet=…
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A: Input energy, Ein=5.1×10-20J Displacement, d=10nm=10×10-9m Force, F=1.0pN=1.0×10-12N
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: A student is riding a bicycle at a constant speed of 4.29 m/s on a level road. The mass of the…
A: Data provided: Constant Speed (v) = 4.29 m/s Frictional and drag force (Fr) = 31.6 N Asked: The…
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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: The electric motor of a model train accelerates the train from rest to 0.520 m/s in 30.0 ms. The…
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Q: The electric motor of a model train accelerates the train from rest to 0.560 m/s in 33.0 ms. The…
A: Given : Initial speed (vi) = 0 because train starts from rest Final speed (vf) = 0.560 m/s Time (t)…
Q: A model train powered by an electric motor accelerates from rest to 0.640 m/s in 22.0 ms. The total…
A: Given Information,Initial Velocity u=0Final Velocity v =0.64 m/stime(t) = 22 ms = 22×10-3…
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A: Solution: Given Values, Initial Velocity (u) =0 m/s (since, it starts from rest)Final Velocity (v)…
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Q: 1. A pickup truck traveling with an Initial Kinetic Energy of 32000 J skids to a stop i) Determine…
A: Given Initial kinetic energy is KEi =32000 J Final kinetic energy is KEf =0 Find the work done.
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A: Q. Given that Power consumed by lightbulb P = 25 W
Q: A block is at rest. A 40.0 N force directed 38.0° above horizontal pulls the block 8.00 m across…
A: Given data: Initial velocity (v0) = 0 m/s Force (F) = 40.0 N Angle (θ) = 38.0° Displacement (d) =…
Q: The electric motor of a model train accelerates the train from rest to 0.680 m/s in 15.0 ms. The…
A: As per the given data, Mass of the motor (m) = 830 g = 830×10-3 kg; Initial velocity (u) = 0 (rest);…
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A: Power is ratio of energy divided by time. P=Et Power is measured in watt.
Q: student
A: Data provided: Constant Speed (v) = 4.36 m/s Frictional and drag force (Fr) = 40.6 N Asked: The…
Q: 44. A metal ramp 6.00 m long is tilted 10.0° and is used to load and unload a moving van. Suppose a…
A: Solution-a) Calculating the height of the ramp:We know the length (L) of the ramp is 6.00 m and the…
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A: The mass of the hiker is 61.5 kg.The initial height is 1200 m.The final height is 2750 m.
Q: The electric motor of a model train accelerates the train from rest to 0.660 m/s in 16.0 ms. The…
A: The expression form work-energy theorem,
Q: A 1500kg car is travelling with an initial velocity of 30.0 km/h while traveling through a school…
A: This question is based on Work Power and Energy topic. Power formula: Efficiency formula:
Q: 44. A metal ramp 6.00 m long is tilted 10.0° and is used to load and unload a moving van. Suppose a…
A:
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- A machine has a power rating of 300 watts. It worked for 4.0 seconds. How much work was done? A. 75 J B. 1200 J C. 304 J33. A 26.00-kg child initially at rest slides down a playground slide from a height of 3.20 m above the bottom of the slide. If her speed at the bottom is 2.80 m/s, how much energy is lost due to friction? J cci16 f16 cci16 ceil6 cci
- 1. A roller-coaster car with a mass of 1200 kg starts at rest from a point 20 m above the ground. At point B, it is 9 m above the ground. [Express your answers in kilojoules (kJ).] a. What is the initial potential energy of the car? b. What is the potential energy at point B? c. If the initial kinetic energy was zero and the work done against friction between the starting point and point B is 40 000 J (40 kJ), what is the kinetic energy of the car at point B 2. The time required for one complete cycle of a mass oscillating at the end of a spring is 0.80 s. What is the frequency of oscillation?For locations that have no electric service, companies are designing bicycle-powered generators that are nearly 100% efficient that can be used to charge cell phones or power lights. If you are the person chosen to pedal and your friends need a total of 150 W of electric power, how much metabolic powerwill you use as you pedal?A. 150 W B. 300 W C. 450 W D. 600 WThe electric motor of a model train accelerates the train from rest to 0.520 m/s in 31.0 ms. The total mass of the train is 855 g. Find the average power delivered to the train during its acceleration. W
- Practice 1. Which of the following represents the relationship between work, power, and time? Choices P = W/t W = P/t P = W×t t = W×P 2. A machine does 2500 J of work in 1 min. What is the power developed by the machine? Choices 21 W 42 W 150 W 2500 W 3. What is the average power output of a weightlifter who can lift 250 kg weights 2.0 m in 2.0 s? Choices 2.5 kW 5.0 × 102 W 4.9 kW 9.8 kWA model train powered by an electric motor accelerates from rest to 0.520 m/s in 23.0 ms. The total mass of the train is 660 g. What is the average power (in W) delivered to the train by the motor during its acceleration? 3.056 How is the work done related to the change in kinetic energy? What is the initial kinetic energy? How is kinetic energy related to speed? How is power related to work and time? Be careful of units. W Need Help? Read It