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A ceiling fan with 82cm diameter blades is turning at 70rpm. Suppose the fan coasts to a stop 29s after being turned off.
1. What is the speed of the tip of a blade 10s after the fan is turned off?
2. Through how many revolutions does the fan turn while stopping?
A hunter aims directly at the target (on the same level) 115 m away. If the bullet leaves the gun at a speed of 205 m/s, by how much will it miss target.
What is the normal force that the incline exerts on the block. find the acceleration of the block.
What the stopping distance of the car is as measured from the point where the driver first notices the red light.
Two Styrofoam balls with the same mass m = 7.7 10-8 kg and the same positive charge Q are suspended from the same point by insulating threads of length L = 0.92 m. The separation of the balls is d = 0.027 m. What is the charge Q?
display a pendulum bob is suspended from a pivot. show that if I draw the pendulum back by an angle θ, the center of the bob is elevated by the distance.
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
He is sitting on a set of bathroom scales. He notes that scales show four times his normal weight. What is the radius of the loop, in meters.
Find out the magnitude of angular acceleration of the wheel
There is a beam that weighs 1500 kilograms and is twenty meters in length. It has a 15000 kilogram mass on the right side, five meters from the center of gravity. obtain the net tension of each brace that is holding up the beam on both sides.
A dam is used to block the passage of a river and to generate electricity. Approximately 5.73 x 10^4 kg of water fall each second through a height of 19.6 m. I one half of the gravitational potential energy of water were converted to electrical energ..
A ball of mass 0.113 kg is dropped from a height of 1.92m above ground. The acceleration of gravity is 9.8m/s^2.Neglecting air resistance find the speed of the ball when it is at a height of 0.812 m above the ground. Answer in units of m/s.
A small .500 kg object moves on a frictionless horizontal table in a circular path of radius 1 m. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of..
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