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How long does it take the Sun to melt a block of ice at 0∘C∘C with...

How long does it take the Sun to melt a block of ice at 0∘C∘C with a flat horizontal area 1.0 m2m2 and thickness 1.5 cmcm ? Assume that the Sun's rays make an angle of 43 ∘∘ with the vertical and that the emissivity of ice is 0.050.

Express your answer using two significant figures.

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