Niels bohr had a theory about the structure of an atom. which part of his theory has been proven wrong? a. an atom is mostly empty space. b. atoms are rearranged in chemical reactions. c. the nucleus is made up of protons and neutrons. d. electrons travel in prescribed orbits around the nucleus.

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory