In an ir spectrum of acetanilide, the peak at about 1700 cm-1 corresponds to :

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

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.