High-frequency sound waves have a shorter (amplitude, pitch, wavelength) and a higher (amplitude, pitch, wavelength) than low-frequency sound waves.

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?