The power radiated by the sun is 3.9 × 1026 W. The earth orbits the sun in a nearly circular orbit of radius 1.5 × 1011 m. The earth s axis of rotation is tilted by 27° relative to the plane of the orbit (see the drawing), so sunlight does not strike the equator perpendicularly. What power strikes a 0.75-m2 patch of flat land at the equator at point Q? |
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