contestada

In the 25-ft Space Simulator facility at NASA's Jet Propulsion Laboratory, a bank of overhead arc lamps can produce light of intensity 2500W/m22500W/m2 at the floor of the facility. (This simulates the intensity of sunlight near the planet Venus.)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.

Respuesta :

boffeemadrid

Answer:

0.00000833 Pa

[tex]8.2210708117\times 10^{-11}\ atm[/tex]

0.0000166 Pa

[tex]1.6382926227\times 10^{-10}\ atm[/tex]

Explanation:

I = Light intensity = 2500 W/m²

c = Speed of light = [tex]3\times 10^8\ m/s[/tex]

Pressure is given by

[tex]P=\dfrac{I}{c}\\\Rightarrow P=\dfrac{2500}{3\times 10^8}\\\Rightarrow P=0.00000833\ Pa[/tex]

The pressure is 0.00000833 Pa

In atm

[tex]\dfrac{0.00000833}{101325}=8.2210708117\times 10^{-11}\ atm[/tex]

The pressure is [tex]8.2210708117\times 10^{-11}\ atm[/tex]

For total reflection

[tex]P=\dfrac{2I}{c}\\\Rightarrow P=\dfrac{2\times 2500}{3\times 10^8}\\\Rightarrow P=0.0000167\ Pa[/tex]

The pressure is 0.0000166 Pa

In atm

[tex]\dfrac{0.0000166}{101325}=1.6382926227\times 10^{-10}\ atm[/tex]

The pressure is [tex]1.6382926227\times 10^{-10}\ atm[/tex]

Otras preguntas