Can rocks be weathered by wind and chemicals in the air

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?