At the Earth's Surface,approximately 1000 W/m² Is Present Due to Solar

question 57

Multiple Choice

At the Earth's surface,approximately 1000 W/m² is present due to solar radiation.At a latitude of 44.5 degrees North,the angle of the sun's rays,when the sun is highest in the sky on the winter solstice,are incident at an angle of 68 degrees from the vertical.What power is incident upon a 1.0 m $\times$ 1.5 m window in a vertical,south-facing wall at this time?

• A) 1390 W
• B) 930 W
• C) 560 W
• D) 370 W

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