An archer pulls her bow string back 0.40m by exerting a, Ask an Expert

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Q.a piece of a metal weighing 0.5 kg, at 100 degrees celsius, was transferred to 0.25 kg of a liquid at 20 degrees celsius. the specific heat capacity of the metal is 400JKg-1K-1 and the the specific heat capacity of the liquid is 2000JKg-1K-1. what is the final temperature of the mixture?

Q. An archer pulls her bow string back 0.40 m by exerting a force that increases uniformly from zero to 250 N. How much work does the archer do in pulling back the bow?

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