Assume that a certain location on the Earth reflects 28.0% of the incident sunlight from its clouds and surface. (a) Given that the intensity of solar radiation at the top of the atmosphere is 1368 W/m2, find the radiation pressure on the Earth, in pascals, at the location where the Sun is straight overhead.

Question

Physics

Yasmine Gilmore

21 June, 23:45

Assume that a certain location on the Earth reflects 28.0% of the incident sunlight from its clouds and surface. (a) Given that the intensity of solar radiation at the top of the atmosphere is 1368 W/m2, find the radiation pressure on the Earth, in pascals, at the location where the Sun is straight overhead.

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Tate Barton · Answer 1

radiation pressure = I / c, I is intensity of radiation, c is velocity of light.

intensity falling on the earth = 1368 x 72 / 100

I = 984.96 W / m²

Radiation pressure = I / c

= 984.96 / 3 x 10⁸

= 328.32 x 10⁻⁸ pascal.