heat capacity water > heat capacity rock
Suppose you are cold-weather camping and decide to heat some objects to bring into your sleeping bag for added warmth. You place a large water jug and a rock of equal mass near the fire. Over time, both the rock and the water jug warm to about 38 oC (100 oF).
If you could bring only one into your sleeping bag, which one should you choose to keep you the warmest? Why?
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What scientific concept do you need to know in order to solve this problem?
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