A note of frequency 200Hz has a velocity of 400m/s. What is the wave length of the note ​

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

What is a carrier wave and how does it affect what you hear on the radio