Frank has a sample of steel that weighs 80 grams. if the density of his sample of steel is 8 g/cm3, what is the sample’s volume? the sample’s volume is cm3.

10 cm^3

Explanation:

Volume is defined as the space occupied by the body. The SI unit of volume is m^3 and the CGS unit is cm^3.

The relation between mass, volume and density is given by

Mass = volume × density

Volume = mass / density

Volume = 80 / 8

Volume = 10 cm^3

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.