Which theory was first prposed by albert einstein

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

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2