When an ambulance with its siren on is moving away from you, the wavelength of the sound gets and the pitch of the sound gets . a. shorter, higher

b. longer, lower

c. shorter, lower

d. longer, higher

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.