Medium is
a. the materials used by an artist.
b. the aesthetic balance an artist achieves in his/her work of art.
c. the relation of one part to another, or of parts to the whole.
d. a reproduction of people, places, or things.

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Which describes increasing the efficiency of energy resource