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A 4.2 kg rock is initially at rest at the top of
a cliff. Assume that 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
1.5 kg of water is raised 0.10

C? The acceleration of gravity is 9.81 m/s
and the specific
heat of water is 4186 J/kg ยท

Answer in units of m

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