Estimate door moment of inertia for rotation
A 25 kg solid door is 220 cm tall, 94 cm wide. What is the door's moment of inertia for rotation about a vertical axis inside the door, 13 cm from one edge?
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A small ball of mass 42 g is suspended from a string of length 69 cm and whirled in a circle lying in the horizontal plane.If the string makes an angle of 28 with the vertical, find the centripetal force experienced by the ball. The acceleration
Salem Possessed: The Social Origins of Witchcraft 1) how did the witchcraft hysteria begin? Why did the trials take so long to being? 2) How did the hysteria end? Why did opposition to the trials arise?
If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice? For comparison, bullet speeds of 700 m/s are common.
The central bright fringe broadens to a width of 2.1 cm. What is the width of the second slit? It may be assumed that is so small that sin is approximately equal to tan.
The latent heat of vaporization for helium is 2.1x104 J/kg. What mass of liquid helium boils away through a venting valve in one hour?
A woman is pushing a box along the ground. She is exerting a horizontal force of 156 N on the box. The box has a mass of 84.0 kg, and has an opposing horizontal frictional force of 135 N. What is the coefficient of kinetic friction between the box
Vehicle(mass = 2500 kg) treviling in the opposite direction. in the collision, the two vehicles come to a halt . At what speed was the sport utility vehicle traveling?
A hockey puck slides off the edge of the table with an initial velocity of 20.0m/s. the height of the table above the ground in 2.0m. what is the magnitude of the verticle component of the velocity of the puck just before it hits the ground?
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