A rollercoaster has a mass of
500kg at the top of a 20m
high track. How much GPE
does...
Physics, 04.02.2021 22:00 markrandsdenn
A rollercoaster has a mass of
500kg at the top of a 20m
high track. How much GPE
does it have
Answers: 2
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A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.
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