Maximum possible coefficient of performance of a heat pump
Question: What is the maximum possible coefficient of performance of a heat pump that brings energy from outdoors at -13.00°C into a 22.0°C house? Note that the work done to run the heat pump is also available to warm up the house.
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During each cycle, a refrigerator ejects 605 kJ of energy to a high-temperature reservoir, and takes in 545 kJ of energy from a low-temperature reservoir. (a) Determine the work done on the refrigerant in each cycle.(in KJ)
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What is the maximum possible coefficient of performance of a heat pump that brings energy from outdoors at -13.00°C into a 22.0°C house? Note that the work done to run the heat pump is also available to warm up the house.
An electromagnetic wave strikes a 2.40-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 7.60 10-4 T. How long does it take for the wave to deliver 2350 J of energy to the wall?
Nuala drives to her grandma's. She drives at 20 miles per hour. The journey takes 50 minutes. How long would the journey take if Nuala drove at 40 miles per hour?
If the heat pump is reversed so that it acts as an air conditioner in the summer, what would be its coefficient of performance?
At the local grocery store, lemons are 52 cents each and limes are 21 cents each. How many lemons and limes can you buy for exactly $3.75?
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