A brass rod, 75.0 cm long and having a cross-sectional area of 2.50 cm2, conducts heat from a large furnace at 375°C into a very large cold water bath at 10.0°C without losing any heat at the lateral surface of the rod

Steady state has been established, and the thermal conductivity of brass is 109 W/m?K. The rate at which the entropy of the system (furnace plus water) is changing is closest to
A) 6.74 × 10-2 W/K.
B) 2.64 × 10-2 W/K.
C) 2.05 × 10-2 W/K.
D) 3.54 × 10-2 W/K.
E) 4.69 × 10-2 W/K.


B

Physics & Space Science

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What will be an ideal response?

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Some light switches that glow in the dark after the lights are turned off employ

A) fluorescence. B) resonance. C) incandescence. D) all of the above E) none of the above

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If the velocity of an object is zero, then that object cannot be accelerating

A) True B) False

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How much mass is lost during a reaction in which 1.7 × 108 MeV of energy is released?

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