Describe the three properties of gravity:
1.)
2.)
3.)
(Please answer quickly)

Distinguish between a transverse wave and a longitudinal wave.

Why is metal often used for cooking pan?

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?