If a photon has a frequency of 1.15 × 1015 hertz, what is the energy of the photon? given: planck's constant is 6.63 × 10-34 joule·seconds.

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?