Which pair of sentences is describing the same velocity? a)a car is parked. a car is moving in circles. b)a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c)a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d)valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.

Distinguish between a transverse wave and a longitudinal wave.

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

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?