A motorboat is crossing a large river. The boat's motor normally gives it a speed of 7 m/s in calm waters, but the river itself is flowing at a speed of 3 m/s. If the boat is angled perpendicular to the direction of the current, what is the overall speed of the boat?โ
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Which feature of a heating curve indicates a change ofn state
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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/kgยทk and 128 j/kgยทk, respectively.
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A motorboat is crossing a large river. The boat's motor normally gives it a speed of 7 m/s in calm w...
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