What is the change in internal energy?

A paddle wheel is used for stirring a liquid contained in a tank supplied 6000 kJ of work and during the stirring operation the tank lost 1500 kJ of heat to the surroundings.If the tank and liquid are considered as a system what will be its change in internal energy.

Asked on 29th September 2019 in Propulsion.
Add Comment
  • 1 Answer(s)

     First law of thermodynamics tells that 



    \\\Rightarrow du=6000-1500
    \\\Rightarrow du=4500\;kJ\)

    So change in internal energy of the system is 4500 kJ

    Answered on 29th September 2019.
    Add Comment
  • Your Answer

    By posting your answer, you agree to the privacy policy and terms of service.