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A wheel with radius 1.50 m is turning about a horizontal axis through its center (the plane of the wheel is vertical). The wheel starts from rest and undergoes constant angular acceleration in the counter clockwise direction. Point A starts at the highest point on the wheel at t=0. After 3.50 seconds the angular speed of point A is equal to 4.50 rad/s. What are the direction and magnitudes of point A's linear acceleration when it is?
1) At the lowest point of its trajectory after making half of a revolution?
2) At the left-most point of its trajectory after making a quarter of a revolution?
3) How much time does it take for the wheel to complete the first revolution?
A muon is created 53 kilometer above the surface of the earth (as measured in the earth's frame). In the muon's frame, find its initial height above the surface of earth
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A ray of light is traveling in glass and strikes a glass/liquidinterface. The angle of incidence is 51.0°, and the index ofrefraction of glass is n = 1.50. What must be the index of refraction of theliquid such that the direction of the light enter..
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