Name two types of sound wave​

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f