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A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle ? = 30.0o. The sphere has mass M = 8.0 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is ? = 0.64. What is the magnitude of the frictional force on the sphere?
A sled is being pulled across a horizontal patch of snow. Friction is negligible. By what percentage would the sled's kinetic energy have increased
A block of crown glass immersed in water as in. A light ray is incident on the top faceat an agle of 01 42.0. with the normal and exist the block at point P. a) find the verical distance y from the top of the block to P. find the angle of refracti..
Explain how would the results have differed in this experiment if the pulley and of the track was lower that the other end of the track?
A current loop in a motor has an area of 0.85cm2, What is the magnitude of the maximum torque on the current loop
q1. a cannonball shot with the initial velocity of 129 ms at an angle of 36deg follows a parabolic path and hits a
A cannonball is shot (from ground level) with an initial horizontal velocity of 39.0 m/s and an initial vertical velocity of 27.0 m/s. What is the initial speed of the cannonball
The coefficient of kinetic friction for wood sliding on wood is 0.20. What is the final speed of the bullet
The width of the contact of each wire with your skin is 1.10 cm and the thickness of the conducting layer of your skin is 0.023 mm, calculate the resistivity of your skin
A 10 gauge copper wire carries a current of 27 A. Assuming one free electron per copper atom, calculate the drift velocity of the electrons
Starting from rest, a 92-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 840 N, How far did he slide down the pole
A parallel beam of unpolarized light in air is incident at an angle of 57.5 degrees (with respect to the normal) on a plane glass surface, What is the angle of refraction of the transmitted beam
Illustrates the difference between acceleration and velocity
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