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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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Section
BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Objects A and B with TA > TB are placed in thermal contact and come to equilibrium. (a) For which object does the entropy increase? (b) For which object does the entropy decrease? (c) Which object has the greater magnitude of entropy change?

(a)

To determine
For which object does the entropy increase.

Explanation

Entropy is a thermodynamic quantity that defines the degree of disorder and randomness of a system. At a constant temperature between two equilibrium states, the change in entropy is given by,

ΔS=QrT

    • Qr is the energy exchanged during a reversible

(b)

To determine
For which object does the entropy decrease.

(c)

To determine
The object with the greater magnitude of entropy change.

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