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Review A system loses 640 J of potential energy. In the process, it does 720 J of work on the environment and the thermal ene
<CH10HW Problem 10.38 4 of 8 Review Consider the process shown in (Figure 1). Suppose E1 1 J Part A What is the final kinetic
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Answer #1

workdone = dPE + dKE + dQ

-720 = - 640 + dKE + 180

dKE = - 260 J

========

10.38

using energy conservation

1 + 1 + 4 = k1 + 3 + 1

k1 = 2 J

=====

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