The displacement of a wave traveling in the negative y-direction is d(y, t) = ( 5.20 cm ) sin ( 6.40 y+ 63.0 t ), where y is in m and t is in s.

a) what is the frequency of this wave?
b)what is the wavelength of this wave?
c)what is the speed of this wave?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

The heliocentric and the geocentric models of the solar system included these central principles

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?