9. 0/2 points I Previous Answers KatzPSEf1 34.P.054 | My Notes Ask Your Teacher

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9. 0/2 points I Previous Answers KatzPSEf1 34.P.054 | My Notes Ask Your Teacher The intensity of sunlight on the Earth is about 1.00 × 103 W/m2. The average orbital radius of Venus is about 70% of the Earth's orbital radius. Using this information, determine the approximate intensity of the sunlight and the radiation pressure on Venus. (Assume the sunlight is totally absorbed.) PR 2.04 Your response is off by a multiple of ten. W/m2 Need Help? Read it Submit Answer Save Progress Practice Another Version

Explanation / Answer

9]

The ratio of the intensities will be:

I/Io = [1/0.7]2 = 2.041

=> I = 2.041Io = 2.041 x 103 W/m2

[what you had calculated was the ratio of their intensities !].

Radiation pressure for a totally absorbing object is given by:

P = I/c

therefore, P = 2.041 x 103 / [3 x 108] = 6.8027 x 10-6 Pa.

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