Sound is a disturbance that travels through a medium as a a. longitudinal wave. b. surface wave. c. standing wave. d. transverse wave.

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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