The electric motor of a model train accelerates the train from rest to 0.660 m/s in 16.0 ms. The total mass of the train is 665 g. Find the average power delivered to the train during its acceleration. W

Q: A coin slides over a frictionless plane and across an xy coordinate system from the origin to a…

A: The magnitude of the displacement of the coin is given by, d=xf-xi2+yf-yi2 Here, xi,yi is the…

Q: An athlete lifts a 410 N set of weights from ground level to a position over her head, a vertical…

A: Given data:  Weight = 410 N Distance (d) = 1.90 N Weight moved at constant speed Required: Work done…

Q: A 2400-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 5.00 m…

A: Given data *The mass of the pile driver is m = 2400 kg *The height that the pile driver falls before…

Q: III When you ride a bicycle at constant speed, nearly all the energy you expend goes into the work…

A: Given data, Area A=0.45 m2 Velocity v=7.3 m/s Drag coefficient Cd=0.9 Time t=1 hr=60×60=3600 s

Q: 16. A diesel-powered crane (mc = 2.93 x 10° kg) is lifting a heavy block of concrete mb = 8.44 x 104…

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Q: You move an object around in a closed path, finishing where you start. During this motion, you…

A: In conservative force field the the work to move an object and close path is zero. Why does if it…

Q: The electric motor of a model train accelerates the train from rest to 0.765 m/s in 24.5 ms. The…

A: a)power is defined as the work per unit time.work is nothing but change in kinetic energy.in this…

Q: A certain rain cloud at an altitude of 2.10 km contains 3.20 107 kg of water vapor. How long would…

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Q: Every year, there is a foot race to the top of the Empire State Building. The vertical distance…

A: The power is the rate of doing of work and it is given by-      where the work done is the product…

Q: An engine can apply a constant 44.8N of horizontal force to a box. If the engine has 53173.7J of…

A: Given data: Force (F) = 44.8 N Energy transferred to the box = 53173.7 J Required: The displacement…

Q: Two Engines, A and B, can do the same amount of work. However, A has a greater power rating than B.…

A: Solution: Work is the amount of energy transferred in a process when an external force is applied.…

Q: A 655-N Marine in basic training climbs a 11.5-m vertical rope at a constant speed in 9.00 s. What…

A: Given : F = 655 N h = 11.5 m t = 9 s

Q: use 4. A 12.0-kg mass is dropped from a hot air balloon at a height of 345 m above the ground. Find…

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Q: 17. A child (mc=26.1 kg) on a bicycle (mb=11.2 kg) goes down a hill as shown. 7.6 m 5.6 m He starts…

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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: Assume g = 10 m/s² A 0.27 kg toy car is moving at 3.6 m/s when it rolls over a rug. It leaves 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…

Q: A radio-controlled car powered by an electric motor accelerates from rest to 0.600 m/s in 22.0 ms.…

A: Solution:   Given Values, Initial Velocity (u) =0 m/s (since, it starts from rest)Final Velocity (v)…

Q: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of…

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Q: A model train powered by an electric motor accelerates from rest to 0.600 m/s in 26.0 ms. The total…

A: The initial velocity of the train v=0 m/s The final velocity of the train v=0.600 m/s The time taken…

Q: A boy throws a ball of mass 0.23 kg straight upward with an initial speed of 26 m/s. When the ball…

A: The initial and the final heights of the ball are the same. So, the change in mechanical energy will…

Q: Jim rides his skateboard down a ramp that is in the shape of a quarter circle with a radius of 5.00…

A: This is a question regarding the energy of a body and the work done by friction. The potential…

Q: a. How much horsepower does a 25 W household lightbulb consume? (Express your answer using four…

A: Q. Given that Power consumed by lightbulb P = 25 W

Q: A puppy lifts up his favorite toy with his mouth performing 500 J of work.in 1.5 seconds. What is…

A: given -         work done by puppy = 500 J       Time taken  = 1.5 sec

Q: How much power is needed to lift a 750 kg elephant 14.3 m in 30.0 seconds?

A: Given data:  Mass (m) = 750 kg Height (h) = 14.3 m Time (t) = 30.0 s Required: Power (P)

Q: My sister Sara is pulling a box along a horizontal surface with the force F inclined at an angle 0…

A: To find :  True or false - work done by force of gravity is zero

Q: A 1900-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 6.00 m…

A: Given: mdriver=1900kgyi,driver=6.09myf,driver=0mvf,driver=vi,driver=0m/sThe distance travelled by…

Q: A horse pulls a carriage a distance of 76.5 m, Find the force applied if the horse did 5000 J of…

A: Given data: Distance covered is, d=76.5 m. Work done by horse is, W=5000 J.

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);…

Q: 1.A 675-N Marine in basic training climbs a 10.5-m vertical rope at a constant speed in 9.25 s. What…

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Q: An object of mass m=1kg moving along the x-axis passes through the point x = 0 with a speed of 2…

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Q: f 25.0° below the horizontal. The force is just sufficient to balance various friction forces, so…

A: Given:- Applied force on the cart F = 30 N directed at an angle of 25.0° below the horizontal The…

Q: ational Potential Energy A skier starts from rest at the top of a frictionless incline of height…

A: at point A, height = hA= 20m speed at point A = VA=0m/s at point B, height = hB= 0 m

Q: Santa Clause is about to distribute his gifts, but his reindeer Rudolph is still sleepy. So, instead…

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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 daredevil on a motorcycle leaves the end of a ramp with a speed of 33.2 m/s as in the figure…

A: The initial speed of the motorcycle when it leaves the ramp is 33.2m/s.  The speed of the motor…

Q: A mass of 8.6 kg is lifted from the ground using a power of 72.8 W in 22.2 seconds. To what height…

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Q: The loaded cab of an elevator has a mass of 4.70 × 10° kg and moves 233. m up the shaft in 21.0 s at…

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Q: Wile E. Coyote waits for the roadrunner on a cliff 7.03 m above the valley to drop a 3250 g boulder.…

A: Given: cliff height h= 7.03 m  Mass m = 3250 g = 3.25 kg And g = 9.8 m/s2

Q: An elevator has a mass of 1160 kg and carries a maximum load of 612 kg. A constant frictional force…

A: Given data: Mass of elevator, me = 1160 kg Mass of load mL = 612 kg Frictional force, f = 3330 N…

Q: Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.10 gallons of gasoline. Only 30% of…

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Q: (d) What is the work done by the normal force? WN = X√ J (e) What is the total work done? Enter to 3…

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.