You drop a ball from a height of 2.0 m, and it bounces back to a height of 1.5 m. a) what fraction of its initial energy is lost? b) what is the ball's speed after the bounce? c) where did the energy go?

An uplifted block of rock between two normal faults

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)

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