The intensity of electromagnetic waves from the sun is 1.4 kW/m² just above the earth's atmosphere. Eighty percent of this reaches the surface at noon on a clear summer day. Suppose you think of your back as a 33.0 cm × 50.0 cm rectangle. Part A How many joules of solar energy fall on your back as you work on your tan for 0.900 hr ? Express your answer with the appropriate units. μA Value 1 Units ?

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The intensity of electromagnetic waves from the
sun is 1.4 kW/m² just above the earth's
atmosphere. Eighty percent of this reaches the
surface at noon on a clear summer day. Suppose
you think of your back as a 33.0 cm x 50.0 cm
rectangle.
Part A
How many joules of solar energy fall on your back as you work on your tan for 0.900 hr?
Express your answer with the appropriate units.
μA
Value
Submit
Units
Request Answer
?
Transcribed Image Text:The intensity of electromagnetic waves from the sun is 1.4 kW/m² just above the earth's atmosphere. Eighty percent of this reaches the surface at noon on a clear summer day. Suppose you think of your back as a 33.0 cm x 50.0 cm rectangle. Part A How many joules of solar energy fall on your back as you work on your tan for 0.900 hr? Express your answer with the appropriate units. μA Value Submit Units Request Answer ?
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