The intensity of sunlight under the clear sky is 1030 W/m2 . How much electromagnetic energy...

The intensity of sunlight under the clear sky is 1030 W/m2 . How much electromagnetic energy is contained per cubic meter near the Earth’s surface? The speed of light is 2.99792 × 108 m/s. Answer in units of J/m3 .

What is the maximum radiation pressure that can be exerted by sunlight in space of intensity 3693 W/m2 on a flat black surface? The speed of light is 3 × 108 m/s. Answer in units of Pa.

Expert Solution

Ans:-

Given data: I= 1030 W/m^2

Here intensity is given W/m^2 i.e J/(s*m^2)

But the answer needed in J/m^3

So,J/s*m^2 * s/m= J/m^3

electromagnetic energy = I/c

= 1030 J/(sm^2)/2.99792*10^8m/s

= 3.44*10^-6J/m^3

Let see another problem

P = I/c = 3693w/m^2/3*10^8m/s

P =1.23*10^-5 Pa

genius_generous answered 1 year ago

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