PHYS
14_InstSolManual_PDF_Part5

# 14_InstSolManual_PDF_Part5 - Temperature and Heat 14-5...

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14.29. Set Up: Solve: (a) and (b) If some of the input energy doesn’t go into the liquid the Q for the calculation of c should be smaller and the cor- rect c would be smaller than the value we calculated in (a), The result in (a) is an overestimate. Reflect: The specific heat capacity of the liquid is about 60% of the value for water. 14.30. Set Up: For water, The amount of mechanical energy that is converted to heat is where m is the mass of water that passes over the waterfall and Solve: and 14.31. Set Up: From Table 14.4, for lead and and for water The temperatures given in the problem are the transition temperatures for each respective phase transition, so Solve: (a) (b) (c) so 14.32. Set Up: The mass of 1 ton is 907 kg. For water, Solve: (a) (b) 14.33. Set Up: The heat that comes out of the person goes into the ice-water bath and causes some of the ice to melt. Normal body temperature is so for the person The ice-water bath stays at A mass m of ice melts and From Table 14.4, for water Solve: Therefore, the amount of that that goes into the ice is and
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