Awave with a wavelength of 0.1 m moves with a speed of 0.5 m/s. what is the frequency of the wave? a. 0.4 hz b. 0.2 hz c. 0.6 hz d. 5.0 hz

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?