How does a second class lever make our work easier?

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.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow