What item would reflect rather than refract light?
magnifying glass
mirror
prism
lens

The softest and hardest minerals are: softest hardest

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)