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4. What is the ratio of beam radiation to that on a horizontal surface for the surface located in
Amman at 1 PM of solar time on February 2 if the surface is tilted 40 o from the horizontal and
pointed 15 o east of south? *
(8 Points)
The ratio =1.43
The ratio 4.43
The ratio =0.43
The ratio =3.43
The ratio 2.43

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