11) During a particular time interval an air conditioner requires 1.2 kJ of mechanical energy in order to remove 2.7 kJ of heat from inside a house, dumping 3.9 kJ of heat outside of the house in the process. How good is it at its job?

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Q: Find the total capacitance (in µF) of this combination of series and parallel capacitors shown…

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Q: Consider a sound wave moving through the air modeled with the equation s(x, t) = 3.00 nm cos(55.00…

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Q: A piano tuner hears a beat every 1.90 s when listening to a 260.0 Hz tuning fork and a single piano…

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