Atype of fish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth. suppose the fish squirts water with an initial speed of 2.50 m/s at an angle of 20.5 above the horizontal. when the stream of water reaches a beetle on a leaf at a height h above the water's surface, it is moving horizontally. how much time does the beetle have to react? a. b. what is the height h of the beetle? what is the horizontal distance d between the fish and the beetle when the water is launched?

568.98

explanation:

its math

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.