Wanda and marita are drinking bottles of water. each girl sounds a different musical note by blowing across the top of her bottle. what is a good hypothesis that could lead to new experimentation? it is more fun to play musical notes with carbonated water than with normal spring water. if the lid on a bottle is tightly closed, then blowing across the top of the bottle will not make a musical note. blowing across the top of a bottle can make a musical note. if there is less water in the bottle, then the note played is lower because there is more air to move around.

ITS NOT C!

its actually D.If there is less water in the bottle, then the note played is lower because there is more air to move around.

D

Explanation:

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.

not too sure thinking all accelerations are pointed down