Which of the following scenarios best describes a system where PE is increasing?
A.
A tennis...
Physics, 01.09.2021 02:30 edulak5726
Which of the following scenarios best describes a system where PE is increasing?
A.
A tennis ball hit by a racket.
B.
A waterfall flowing off of a cliff.
C.
A soccer ball rolling up a hill.
D.
A boy sitting in his chair.
Answers: 2
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Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17Β°c. this system uses a regenerator as well as reheating and intercooling β the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20Β°c. determine the systemβs thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
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