The range of human hearing extends from approximately 20 Hz to 20000 Hz. What are the wavelengths of these extremes when the speed of sound in air is equal to 331 m/s. ___ m to ___ m

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?