The Doppler effect describes the change in the observed of a wave when there is relative motion between the wave source and the observer. *
Amplitude
Interference
Wavelength
Frequency

Aloaded 355 kg toboggan is traveling on smooth horizontal snow at 4.00 m/s when it suddenly comes to a rough region. the region is 6.60 m long and reduces the toboggan's speed by 1.00 m/s . what average friction force did the rough region exert on the toboggan?

An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. what is the direction of the electric force exerted on the electron once it has entered the electric field?

Achild is riding a merry-go-round that has an instantaneous angular speed of 12 rpm. if a constant friction torque of 12.5 nm is applied to the merry-go-round with a moment of inertia of 50.0 kg m2, what is the angular acceleration in rad/s2?