38. (II) How long does it take the Sun to melt a block of
Chapter 14, Problem 38(choose chapter or problem)
38. (II) How long does it take the Sun to melt a block of ice at 0C with a flat horizontal area 1.0 m2 and thickness 1.0 cm ? Assume that the Suns rays make an angle of 30c with the vertical and that the emissivity of ice is 0.050.
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