M = 10kg, h = 5m, g = 9.8m/s/s, PE = ?

The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?