A 211kg rock sits in full sunlight on the edge of a cliff 4.90m high. The temperature of the rock is 30.2?C.
1. If the rock falls from the cliff into a pool containing 6.20m3 of water at 17.8?C, what is the final temperature of the rock-water system? Assume that the specific heat of the rock is 1010 J/(kg?K).