The greatest value ever achieved for the speed of sound in air is about 11000 m/s produced
at about 2 x 10^10 Hz.
Find the wavelength of this wave.

Why is there friction between objects

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n