While flying to Tucson, Connie’s plane experiences turbulence that causes the coffee in her cub to oscillate back and forth 4 times each second. If the waves of coffee have a wavelength of 0.1 m, what is
the speed of a wave moving through the coffee?

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?