Which is a longitudinal wave that requires a medium to move

What is another word for cycles per second?

It takes 2.58 J of work to stretch a Hooke's-law spring 15.6 cm from its unstressed length. How much the extra work is required to stretch it an additional 9.39 cm? Answer in units of J.

An 80 kilogram rock at the edge of a 10 meter cliff has what potential energy of joules?

20. Which of the following is an accurate statement? A. DC generators produce current with a voltage that changes from positive to negative B. AC generators produce current that's pulsating but always remains positive, C.

The hormone glucagon is released by number of different tissues in the body to stabilize blood glucose levels.

Why are galaxies visible

I hockey puck slides across an ice rink more easily than it does across a rough concrete surface why is this

Sodium-22 Sodium-25 # of protons # of neutrons # of electrons

As the particles of a solid undergo sublimation, they A: lose energy B: move closer to one another C: change temperature D: move farther apart from one another

the math club must order 35 new uniform shirts. There are 5 more girls than twice the number of boys in the club. How many of each uniform type should the club order