Physics, 14.11.2020 01:50 nculberson6
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You drop a large rock from a 19 story building. It is 78 meters high. The wind is blowing from the southwest at 3.5 m/s.
What is the initial velocity of the rock?
How long will it take to hit the pile of leaves that are sitting below?
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An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.
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