Place a bucket on the ground.

Back up enough so you can get a good running start.

Hold the ball in your hand by your side.

Run by the basket and without slowing down, or aiming, drop the ball in the bucket as you run by it.

What was the result

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

are there options? cause you ain’t. real specific

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.