When a student listens to music, sound waves travel from the speaker to her ear. Which of the following is a physical description of this process?
a. Particles produced at the speaker move to the student's ear.
b. Energy is transferred from the speaker to the student's ear.
Matter is transferred from the speaker to the student's ear.
d. Clusters of air molecules are sent from the speaker to the student's ear.

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 .

a. spokes of a wheel.

as indicated in the question radial contains rad, also found in radius, so the fracture's would span the radius.