# physics

The power output in the sun is about 4.00 x 10^26W.

(a). Calculate the power per unit area (intensity), in kilowatts per square meter, reaching Earth's upper atmosphere from the sun. The radius of the Earth's orbit is 1.5 x 10^11m.

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1. Anyone

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2. 1415 kW/m^2

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3. 1.415 kW/m^2 *ftfy

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