Which is not true about longitudinal waves? A. High pitch sounds have higher frequencies.
B. Longitudinal waves have to travel through a medium.
C. Electromagnetic waves are longitudinal waves.
D. Sound waves are longitudinal waves.

What is the final velocity of the initial velocity of 25 and -50?

Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)