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galina1969 [7]
3 years ago
10

One end of a copper rod is in thermal contact with a

Physics
1 answer:
Gwar [14]3 years ago
5 0

Answer:

\Delta S_1=-16\ J/K

\Delta S_2=26.66\ J/K

ΔS= 10.66 J/K

Explanation:

Given that

For hot reservoir :

T₁= 500 K

For cold reservoir :

T₂= 300 K

Energy transfer ,Q= 8000 J

The entropy change for the Hot reservoir :

\Delta S_1=-\dfrac{Q}{T_1}

\Delta S_1=-\dfrac{8000}{500}

\Delta S_1=-16\ J/K

The entropy change for the cold  reservoir :

\Delta S_2=\dfrac{Q}{T_2}

\Delta S_2=\dfrac{8000}{300}

\Delta S_2=26.66\ J/K

The entropy for universe

ΔS=ΔS₁+ΔS₂

ΔS= - 16 + 26.66 J/K

ΔS= 10.66 J/K

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