# Problem: In the 25-ft Space Simulator facility at NASA’s Jet Propulsion Laboratory, a bank of overhead arc lamps can produce light of intensity 2500 W/m2 at the floor of the facility. (This simulates the intensity of sunlight near the planet Venus.) Find the average momentum density (momentum per unit volume) in the light at the floor.

###### FREE Expert Solution

Average momentum density (momentum per unit volume):

$\overline{)\frac{\mathbf{dp}}{\mathbf{dt}}{\mathbf{=}}\frac{\mathbf{I}}{{\mathbf{c}}^{\mathbf{2}}}}$

I is the intensity and c is the speed of light.

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###### Problem Details

In the 25-ft Space Simulator facility at NASA’s Jet Propulsion Laboratory, a bank of overhead arc lamps can produce light of intensity 2500 W/m2 at the floor of the facility. (This simulates the intensity of sunlight near the planet Venus.)

Find the average momentum density (momentum per unit volume) in the light at the floor.