Calculate the power incident on a flat tin roof 8.00m x 20.0m. The radiation is incident normal to the roof and Sun delivers the average power/unit area of 1.00x10^3W/m^2 to Earth's surface.
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Area of flat roof = 8.00 x 20.0
=160.0 sq m
Thus power incident on the roof 8.0 x 20.0=`1.0xx10^3 xx 160.0 W`
`` `=1.60 xx 10^5 W`
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