Question

You decide to use your body as a Camat heat engine. The operating is na tube with one and in your mouth where the temperatures 370 "C) and the other end at the surface of your son 300C What is the metien Correct Рив v 27.4 Sum X Incorrect: Try Again temps remaining Part VOA RO?

Answer 1

TH=370 = 310k T = 30c = 303k @ Maximum efficiency - 1 1 - 7 ) x 100 Caruct = (1 - 303) X 100 e carnet - 2.26 % efficiency is low this mass m= 2.80 kg at height h=1-30m gravitational potential energy u= mgh U= 2.8089.818 1.30 u= 35.708 J © the gravitional potential enegy here, represents the output work w by your body, that need input heat QA to accomplish the work Hence, Input heat required to complete this work is QH 35.708 - 1580 J Què = 0.0226 4186 J = 1.46*10* 5/ber from one bar = 350 food calories x, Food calories - & Energy 80% of energy goes to heat, where this heat is considered so the total energy E= OH = 1980 - 1975 J 1975 J 7. 46x106 I/bar = 1. 358 10 3 bass Number of bars = - this way you must eat 1.35x10 s bars. to lift the box in