If work done by the system is 300 joule

Asked by admin @ 20/08/2021 in Physics viewed by 294 People

If work done by the system is 300 joule when 100calorie heat is supplied to it . The change in internal energy during this process is ?

Answered by admin @ 20/08/2021

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If work done by the system is 300 joule when 100 cal heat isc my supplied to it .the change in internal energy during the process is

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Heat given to the system is given by

Q = 100 Cal = 420 J

now work done by the system is given by

W = 300 J

Now as per first law of thermodynamics we know that

Q = W + \Delta U

420 = 300 + \Delta U

\Delta U = 120 J

So change in internal energy will be 120 J

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