Which of the following statements are true of nuclear energy and reactors? Check all that apply.

A. A nuclear reactor uses controlled fission reactions.

B. Nuclear reactors use uncontrolled reactions,

C. Nuclear fission reactions use only a small amount of material to
produce a large amount of energy.

D. Two tons of starting material are required for nuclear fission.

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18