(30 POINTS Please only answer if you actually do know the answer because this is the third time I’m posting this and people just keep taking advantage of me giving a lot of points.

Rohit is trying to tune an instrument

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?

In a good thermo flask the main cause of heat loss is