Question1a 52 kg mountain climber starting from rest climbs

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Question1

A 52 kg mountain climber, starting from rest, climbs a vertical space of 730 m. At the top, she is again at rest. In method, her body generates 4.1 x 10^6 J of energy via metabolic processes. In fact, her body acts like a heat engine. Find out her effectiveness as a heat engine.

Question2

The sun is a sphere with radius 6.96 x 10^8 m and the average surface temperature of 5800 K. establish amount by which the sun's thermal radiation increases the entropy of entire universe each second. Suppose sun is a perfect emitter (that is, e = 1), and that an average temperature of the rest of the universe is 2.73 K. Do not think about the thermal radiation absorbed by the sun from the rest of universe.

Reference no: EM13350292

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