The linear expansivity of the material of a cube is 1.2×10^-6 k^-1. if the length of each side of the cube is 10cm. find the area of one face of the cube and the volume of the cube when it's temperature is raised by 30k.

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.

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.

What is an electric motor? explain its operation. 2-3 sentence