A2.00 kg block is placed against a spring on a frictionless 36â° incline. the spring, whose spring constant is 19.8n/cm, is compressed 22.8 cm and then released. what is the elastic potential energy of the compressed spring?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

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?

Which sound characteristic is not affected by the relative motion of an object