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The intensity of sunlight hitting the earth is about 1300

Chapter 9, Problem 10P

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QUESTION:

Problem 10P

The intensity of sunlight hitting the earth is about 1300 W/m2. If sunlight strikes a perfect absorber, what pressure does it exert? How about a perfect reflector? What fraction of atmospheric pressure does this amount to?

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QUESTION:

Problem 10P

The intensity of sunlight hitting the earth is about 1300 W/m2. If sunlight strikes a perfect absorber, what pressure does it exert? How about a perfect reflector? What fraction of atmospheric pressure does this amount to?

ANSWER:

Solution 10P

Step 1 of 3:

We need to find out the exerted pressure when sunlight strikes a perfect absorber, and in a perfect reflector. In which the intensity of the incident light is .

Pressure exerted by the sunlight,

Where  is the intensity of the light.

 is the velocity of the light.

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