The intensity of sunlight striking Earth\'s upper atmosphere (calledthe solar co

Question

The intensity of sunlight striking Earth's upper atmosphere (calledthe solar constant) is 1.35 kW/m2. (a) Find Erms andBrms due to the sun at the upper atmosphere ofEarth.
Erms = 1V/m
Brms = 2µT

(b) Find the average power output of the sun.
3 W

(c) Find the intensity at the surface of the sun.
4 W/m2

(d) Find the radiation pressure at the surface of the sun.
5 Pa (a) Find Erms andBrms due to the sun at the upper atmosphere ofEarth.
Erms = 1V/m
Brms = 2µT

(b) Find the average power output of the sun.
3 W

(c) Find the intensity at the surface of the sun.
4 W/m2

(d) Find the radiation pressure at the surface of the sun.
5 Pa

Explanation / Answer

Intensity (I) of the light = 1.35 kW/m2                                               = 1350 W/m2 Now formula for calculating the value of the rms value of theelectric field is                      Erms = 2Ic                              = [2(1350W/m2)(3.0*108m/s2)]                              = 9.0*105 V/m rms value of the magnetic field is                    Brms = Erms / c                            = (9.0*105 V/m) / (3.0*108m/s) Do the calculation work.

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