A ladybug is resting on a 0.5 meter radius turntable that is rotating with a period of 2 seconds. the ladybug is halfway between and the edge. Required:
a. What is the tangential distance travelled by the ladybug in one revolution?
b. What is the tangential velocity of the ladybug?
c. What is the angular distance traveled by the ladybug after one revolution?
d. What is the angular velocity of the ladybug?

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.

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