When a liquid freezes, an amount of thermal energy (Q = -m H1) must be removed from the liquid to turn it into a solid A. True
B. False

Ball b is hanging from an inextensible cord. an identical ball a is released from rest when it is just touching the cord and drops through the vertical distance h a 5 8 in. before striking ball b. assuming e 5 0.9 and no friction, determine the resulting maximum vertical displacement h b of the ball b

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What is the measure of a change in an objects velocity?