SHM, Waves, Thermo, E&M Practice Problem Workbook
SHM, Waves, Thermo, E&M Practice Problem Workbook
SHM, Waves, Thermo, E&M Practice Problem Workbook
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MECHANICS PRACTICE PROBLEM SETS 30<br />
a. If the sphere is enclosed in a room whose walls are kept at -5°C, what is<br />
the net flow rate of energy out of the sphere Answer: 33 W<br />
22. (G14.56) Estimate the rate at which heat can be conducted from the interior of the<br />
body to the surface. Assume that the thickness of tissue is about 4.0 cm, that the skin<br />
is at 34°C and the interior at 37°C, and the surface area is 1.5 m 2 . Answer: 22.5 W<br />
Table 14-3 Latent Heats at 1 atm<br />
Substance Heat of Fusion (J/kg) Heat of Vaporization (J/kg)<br />
Oxygen 0.14 x 10 5 2.1 x 10 5<br />
Nitrogen 0.26 x 10 5 2.00 x 10 5<br />
Ethyl Alcohol 1.04 x 10 5 8.5 x 10 5<br />
Ammonia 0.33 x 10 5 1.37 x 10 5<br />
Water 3.33 x 10 5 22.6 x 10 5<br />
Lead 0.25 x 10 5 8.7 x 10 5<br />
Silver 0.88 x 10 5 23 x 10 5<br />
Iron 2.89 x 10 5 63.4 x 10 5<br />
Tungsten 1.84 x 10 5 48 x 10 5<br />
Gamzon & Gregorian-Michaelsen 6/13/12
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