A motorcyclist is moving 24.5 m/s toward a stationary siren, and
hears an 894 Hz sound. What is
the frequency of the siren when
the cyclist is stationary?
(Hint: 894 Hz is the Doppler-shifted
frequency.)
(Speed of sound = 343 m/s)
(Unit = Hz)

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

What is the single most important equation in all of physics?

Aviolently rotating column of air is formed around a region of extremely low air pressure above land. which of these weather conditions is most likely to follow? blizzard cyclone tornado hurricane