A string that is stretched between fixed supports separated by 88.8 cm has resonant frequencies of 1050 and 875.0 Hz, with no intermediate resonant frequencies. What are (a) the lowest resonant frequency and (b) the wave speed

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Why do electron microscopes have higher resolving power than light microscopes?

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?