How do sound waves move in air? a) the wave particles diffract around a barrier. b) the wave particles move in a curvilinear motion. c) the wave particles move via acceleration; that is, they increase speed. eliminate d) the wave particles displace one another, with particles replacing each other.

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is