When a beam of light passes from substance 1 (index of refraction = 1.55) to substance 2, it has an angle of incidence of 39 ∘
and an angle of refraction of 24∘ What’s the index of refraction of substance 2? For those who’ll attempt the problem, Snells law should be used. k

Scissors and a seesaw both cut things that’s the only comparison

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.