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A fan rotating with initial velocity! = =2rad=s comes to complete stop after15:5 turns, Find.
a) the angular acceleration.
b) the time it takes the fan to stop.
c) timeit takes the fan to make 12 rev.
If the ball rebounds with the same speed and angle, what was the magnitude of the impulse delivered to it by the floor
Three applied forces, F1= 20.0 N, F2= 40.0 N and F3= 10.0 N act on an object with a mass of 2.00 kg which can move along an inclined plane. What is the amount of work done by the gravitational force as the object moves up the inclined plane
q1. a 2.90-m-long 300 kg steel beam extends horizontally from the point where it has been bolted to the framework of a
what magnitude of horizontal force must the person apply to keep it moving with constant velocity? c) If the person continued to push with the force used to start the motion, what would be the acceleration of the trunk.
if air is 21 percent oxygen by volume and oxygen has a density of 1.31 gl what is the volume of a room that contains
A single-turn current loop, carrying a current of 4.41 A, is in the shape of a right triangle with sides 42.1, 94.5, and 103 cm. What is the magnitude of the net force on the loop
Suppose you want to make a scale model of a hydrogen atom. For the nucleus you choose a small ball bearing with a radius of 1.7 mm, What would be the radius of the model
One method for measuring the speed of sound uses standing waves. A cylindrical tube is open at both ends, and one end emits sound from a tuning fork. What is the speed of sound in the gas tube
A rectangular block of ice 9.00 m on each side and 0.7 m thick floats in sea water. The density of the sea water is 1025kg/m3. The density of ice is 919kg/m3. How high does the top of the ice block float above the water level.
A 2590-kg van runs into the back of a 821-kg compact car at rest. They move off together at 8.5 m/s. Assuming the friction with the road is negligible, calculate the initial speed of the van
A proton is released from rest at x = -3.00 cm in a uniform electric field of magnitude 1620 N/C, What is the change in potential energy when the proton reaches x = 5.00 cm
The motion of a particle is given by x = A sin^3(?t). What is the amplitude of the particle's motion
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