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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
Question
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.
A) Find the average radiation pressure (in pascals) on a totally absorbing section of the floor.B) Find the average radiation pressure (in atmospheres) on a totally absorbing section of the floor.C) Find the average radiation pressure (in pascals) on a totally reflecting section of the floor.D) Find the average radiation pressure (in atmospheres) on a totally reflecting section of the floor.
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Physics
4 years
2021-08-08T17:03:31+00:00
2021-08-08T17:03:31+00:00 1 Answers
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Answers ( )
Answer:
a) 8.33 x 10^-6 Pa
b) 8.23 x 10^-11 atm
c) 1.67 x 10^-5 Pa
d) 1.65 x 10^-10 atm
Explanation:
Intensity of the light
= 2500 W/m^2
speed of light
= 3 x 10^8 m/s
a) we know that the pressure for for a totally absorbing surface is given as
b) 1 atm = 101325 Pa
c) for a totally reflecting surface
d) 1 atm = 101325 Pa