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A freezer has a coefficient of performance of 2.40. The freezer is to convert 2.30 kg of water at T = 27.0°C to 2.30 kg of ice at T = -5.0°C in one hour.
(a) What amount of heat must be removed from the water at 27.0°C to convert it to ice at -5.0°C?
(b) How much electrical energy is consumed by the freezer during this hour?
(c) How much wasted heat is delivered to the room in which the freezer sits?
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocityof +3.79 m/s, grabs him. The tackler holds onto the receiver, andthe two move off together with a velocity of +1.55 m/..
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