Ray Bender observes that light striking a sheet of material at a 30 degree angle to the surface, is bent to an angle of 36 degrees relative to the normal as it passes through the material. Through what material is the light passing?
A)
Ruby
B)
Water
C)
Pyrex
D)
Crown glass

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Diamond will scratch quartz. true or false