Hydroelectric plants use to produce electricity. a. fire b. sunlight c. water d. wind

Which notation is used to represent an alpha particle? a. b. c. d.

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?

Argon, neon, and xenon are examples of