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Thermodynamic

yoav
in Homework Help

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hi guys anyone can help with this please?

The painting describes an isolated system containing gas, with a floating piston. The system goes through the following process: the propeller works
At a power of 1 kW for a minute and a half. The system volume varies from 30 liters to 90 liters, the initial pressure in the system is
  :accountant. 0.5 MPa
A. Changing the energy of the system 
B. Changing the enthalpy of the system 

IMG_20171124_144046.jpg

Edited by yoav

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