Prove that the ratio of the density of a substance to the density of water is equivalent to the ratio of the weight of any volume of the substance to the weight of equal volume of water

The plum pudding model of the atom state that ?

The necleus of an atom is made up of what subatomic particles?

Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp,max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?