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The Sun radiates about 3.83x1026 W of power. How large should a perfectly reflecting solar sail be on a space ship of mass 50 kg to provide an acceleration of 10-4 m/s2 at the Earth's orbit? The radius of Earth's orbit is 1.50 x 1011 m.

a. 550 m2

b. 625 m2

c. 1100 m2

d. 2500 m2

e. None of these is correct.

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