Uhhh help lolz For the following situations, determine whether the sound amplitude is large or small and whether the frequency is high or low. For example, when the fat lady sings at the opera, she’s famous for making a high frequency, large amplitude sound. Describe
The thumping base on a car stereo
The squeak of a mouse
The sound of distant thunder
The screech of brakes

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

magnified images possible images can be real = projected onto a screen

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.