A rope is stretched with a force of 720 N. Its linear mass density is 0.460 kg/m. When you strike the rope transversely, at what speed will the resulting pulse propagate along it?
A wave has a speed of 351 m/s and a wavelength of 2.20 meters. What is its period?
A spring with spring constant 31 N/m is stretched from equilibrium by 0.34 m. How much potential energy is stored in the spring?
A simple pendulum has a period of 3.9 s. What is its length?