The diagram shows organisms a diver observed during an ocean dive. A sailboat floats on the water with objects below it in the water. These objects are labeled seaweed negative 20 meters, clownfish negative 23 meters, squid negative 44 meters. What did the diver most likely use as a reference point to describe the position of the squid? the ocean surface the ocean floor the position of the clownfish the position of the seaweed

My answer is=

Ocean surface:0

Seaweed:(-20)

Clownfish:(-23)

Squid:(-44)

Ocean floor:(-50)

(I'm very sorry if I was wrong T~T)

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.

can u provide the graph and if its not possible

then i can tell u the segment where the

average time interval starts degrading is the segment where the car is slowing down