In air, a sound wave with a frequency of 175Hz has a wavelength of about 1.55 meters. What is the wave length of a wave if the frequency is increased to 784Hz? (Show your work)

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?