# physics

A 3.5 kg rock is initially at rest at the top of a cliff. Assuming the rock falls into the sea at the foot of the cliff and that its kinetic energy is transferred entirely to the water, how high is the cliff if the temperature of 0.88 kg of water is raised 0.10°C? (Neglect the heat capacity of the rock.)

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1. heatgainedSea=original PE of frock
.88*cwater*deltaTemp=3.5*9.8*height

ok, solve for height.

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bobpursley

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