The amount of internal enrgy needed to raise temperature of, Ask an Expert

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Q. A light ray leaves point A in the figure, reflects from the mirror, and reaches point B.

How far below the top edge does the ray strike the mirror?

Q. The amount of internal enrgy needed to raise the temperature of .25kg of water by .2 degreesCis 209.3J. How fast must a .25kg baseball travel in order for its kinetic energy to equal this internal energy?

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