The laws of refraction and reflection are the same for sound as for light. the speed of sound in air is 340 m/s and in water it is 1510 m/s. if a sound wave approaches a plane water surface at an angle of incidence of 12.0 °, what is the angle of refraction?

θ = 67.4242°

Explanation:

The law of refraction, or Snell's law, states that:

With n1 = v1/c      n2 = v2/c

Therefore:

If 1 denotes the air-side:

v1 = 340 m/s

v2 = 1510 m/s

θ1 = 12°

θ2= 67.4242°

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

well clustered together.

points close on a scatter diagram