Suppose a skydiver (mass = 80kg) is falling toward the earth. calculate the skydiver’s gravitational potential energy at a point when the skydiver is 100m above the earth.

For a particular reaction, ? h = -144.6 kj and ? s = -301.2 j/k. calculate ? g for this reaction at 298 k.

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

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?