Alight ray in air strikes a glass surface with an angle of incidence of 30.0°. the angle of refraction in the glass is 20.0°. what is the speed of light in the glass

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?