Someone plans to float a small, totally absorbing sphere 0.500 m above an isotropic point source of light, so that the upward radiation force from the light matches the downward gravitational force on the sphere. the sphere’s density is 19.0 g/cm3, and its radius is 2.00 mm. (a) what power would be required of the light source?

468449163762.0812 W

Explanation:

m = Mass =

V = Volume =

r = Distance of sphere from isotropic point source of light = 0.5 m

R = Radius of sphere = 2 mm

= Density = 19 g/cm³

c = Speed of light =

A = Area =

I = Intensity =

g = Acceleration due to gravity = 9.81 m/s²

Force due to radiation is given by

According to the question

The power required of the light source is 468449163762.0812 W

waste

explanation: