Question

plz help me on this what would be the work done on the system if the internal energy of the system falls by100 j even when 200 joules of heat is suplied to it

Answer 1

Answer:

300 J

Explanation:

We have to calculate the work done on/by the system if the internal energy of the system falls by 100 joules even when 200 joules of heat is supplied to it.

Solution:

By sign convention,

dQ = du + dw .......... (1)

du = 200 J ( ∵Heat absorbed is positive )

dw = - 100 J ( ∵Heat given out is negative )

Substitute these values in (1):

dQ = 200 - (-100)

dQ = 200 + 100

dQ = 300 J

This is the required answer.

Answer 2

HEY MATE!!

By sign convention

DQ = du+dw

du= 200J

dw=-100J

SUBSTITUTE THE VALUE IN Eq 1

DQ = 200-(-100)

DQ = 200+100

DQ= 300J

HERE IS UR ANSWER

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