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Fofino [41]
4 years ago
10

PLEASE HELP!!!!!!!!!!!

Physics
1 answer:
daser333 [38]4 years ago
4 0

As we know that from first law of thermodynamics we have

Q = \Delta U + W

here we know that

Q = heat given to the system

W = work done by the system

\Delta U = change in internal energy of the system

now we will have

Q = 1000 J

U_i = 2000 J

Work done by the piston = 500 J

so work done by system of gas = -(work done by piston)

W_g = -500 J

now from above equation we have

1000 J = - 500 + \Delta U

\Delta U = 1500 J

now we know that

\Delta U = U_f - U_i

U_f - 2000 = 1500 J

U_f = 3500 J

So final internal energy of the gas is 3500 J while initial internal energy is given as 2000 J

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