Exactly 500 grams of ice are melted at a temperature of 32°F. (LF,ice = 333 J/g.) The change in entropy (in J/K) is
A. 321.
B. 146.
C. 512.
D. 610.
E. 5230.
Answer: D
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What will be an ideal response?
Which of the following is not an advantage of the Hubble Space Telescope over ground-based telescopes?
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Estimate the R-values for a 5 cm-thick fiberglass board and a 2.5 cm-thick polyurethane foam layer. Then compare their respective conductivity-times-density products if the density for fiberglass is 50 kg/m3 and the density of polyurethane is 30 kg/m3 . Use the units
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