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If a closed system loses 2200 J of heat (to the surrounding environment) and 800 J...

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Physics

  1. If a closed system loses 2200 J of heat (to the surroundingenvironment) and 800 J of work is done on thesystem then what was the change in the internal energy ofthe system.

  1. An ideal gas (inside a cylinder fitted with a movable piston)is heated and slowly expands at constant pressure of 5 atm from 1.5L to 5.5 L.  How much work is done by the gas in thisprocess?
  1. If 1,700 J of heat was added to the gas in problem 3, then howmuch did the internal energy of the system change?

  1. What is the efficiency of an automobile engine that has a heatinput of 60.0 kJ and a heat output of 25.0 kJ?

  1. If the exhaust temperature of the engine in problem 5 is 250°C, then what is the intake temperature?    (Theexhaust and intake temperatures are the low and high operatingtemperatures of the engine, TL and TH)

Answer & Explanation Solved by verified expert
4.0 Ratings (649 Votes)
If a closed system loses 2200 J of heat to the surrounding environment and 800 J of work is done on the system then what was the change in the internal energy of the system Please notice the sign I used Q W U 2200 800 U U 2200800 1400 J answer An ideal gas    See Answer
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