Maurice Tutor

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    Argosy University/ Phoniex University/
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Category > Computer Science Posted 26 Jul 2017 My Price 3.00

piston–cylinder device

1. A mass of 15 kg of air in a piston–cylinder device is heated from 25 to 77°C by passing current through a resistance heater inside the cylinder. The pressure inside the cylinder is held constant at 300 kPa during the process, and a heat loss of 60 kJ occurs. Determine the electric energy supplied, in kWh.

2. A piston–cylinder device contains 2.2 kg of nitrogen initially at 100 kPa and 25°C. The nitrogen is now compressed slowly in a polytropic process during which PV1.3 = constant until the volume is reduced by one-half. Determine the work done and the heat transfer for this process.

 

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Maurice Tutor
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Status NEW Posted 26 Jul 2017 05:07 PM My Price 3.00

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