Heat and Thermodynamics

Temperature of a substance is 20 degree faranheit—–temperature scale conversion
The average global temperature on Mars—–temperature scale conversion
700 J of work is done on a system——–energy tranfer
1000 J of heat is transferred to a system——-change in thermal energy
A heat engine extracts 500 J——–engine efficiency
What is the efficiency of a heat engine———engine efficiency
A heat engine does a work of 250 J————-heat extraction
A power plant generating 400 MW————rate of heat energy exhaustion
A heat engine is operating between energy reservoirs at 25 degree centigrade————heat extraction
A heat pump removes 35 J of energy——–coefficient of performance
A refrigerator with a coefficient of performance of 3.5——–heat extraction
A heat pump is used to heat up a house in winter———coefficient of performance