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An insulated rigid tank contains 1.5 kg of helium at 30∘C and 500 kPa. A paddle wheel with a power rating of 0.1 kW is operated within the tank for 30

minutes. Cvof helium = 3.12 KJ/Kg.K


  mass=1.5 kgs
 power rating=0.1
 time=30 minutes
0 0 0
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