Someone who is use first for the confluence pattern will likely

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

The slope of a velocity time graph over any interval of time gives the during that interval

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?