A person walks out an unknown distance from a building of height 18 m and shines a flashlight beam towards its top. He finds that when the beam is elevated at an angle of 370 with respect to the horizontal, the light strikes the top of the building. Find (i) the distance walked by him and (ii) the distance the flash light beam has to travel before it strikes the top of the building.

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A:

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Q: a. fi = 85 n, East 35 degrees South; f; = 110 n, South 10 degrees West b. fi = 150 n, North 56…

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Q: 8. What is angle 0 ? 9. What is angle ? 30 0 30°

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.