Which map feature best indicates whether two regions have the same elevation?

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?

Compare the patterns of the two waves shown in the image. which statement is true about these waves?

An object is placed in front of a concave mirror between the pole and the focus of the mirror, what is the nature of the image formed by the mirror