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Which of the following represents a virtual image?
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The difference between a red shift and a blue shift has to do with wavelength frequency. t or f
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Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)
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Which waves arrive at a seismograph first? a. p waves b. s waves c. transverse waves d. surface wav...
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