Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. why does the bob eventually come to rest? what happens to its energy eventually? is it a violation of the law of conservation of energy?

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

What happens to the light rays when they hit the specimen?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)