How much heat is absorbed by a 600g iron cornbread an when its temperature rises from 22C to 130C?

Which of the following represents an upside-down image?

In what direction does the medium move relative to the direction of the wave? explain.

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?