Two spheres have the same radius and equal masses. One is made of solid aluminum, and the other is made from a hollow shell of gold. Which one has the bigger moment of inertia about an axis through its center?

Explanation:

In order to know which sphere has the bigger moment of inertia, you use the following formulas for the moment of inertia for each solid sphere and hollow shell. Both spheres have the same radius and mass.

Solid sphere:

      (1)

Hollow shell:

      (2)

If you dive the equation (1) into the equation (2) you obtain:

Then, the hollow shell has a moment of inertia that is 3/5 times the moment of inertia of the solid sphere.

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

i would think it's food chain