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April 21, 2014

Homework Help: physics

Posted by Justin on Tuesday, July 30, 2013 at 5:14pm.

(a) A solar collector is 12.0% efficient in gathering solar energy and converting it to heat. If the average intensity of sunlight on one day is 700 W/m2, what area(m^2) should your collector have to gather energy at the rate of 150 W?

(b) What is the maximum cost ($)of the solar panel if it must pay for itself in two years of operation averaging 9.00 hours per day? Assume that it earns money at the rate of 3.00˘ per kilowatt-hour. There are 365.25 days in a year.

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