48. (I) Solar cells (Fig. 15-26) can produce about 40 W of
Chapter 15, Problem 48(choose chapter or problem)
48. (I) Solar cells (Fig. 15-26) can produce about 40 W of electricity per square meter of surface area if directly facing the Sun. Howr large an area is required to supply the needs of a house that requires 22kWh/day? Would this fit on the roof of an average house? (Assume the Sun shines about 9 h/day.)
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