What do nuclear fission and nuclear fusion have in common? a. they both produce radioactive waste. b. their products have more mass than their reactants. c. they both convert energy into mass. d. they start with the same reactant.

The de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ. recall that wave number is defined by k=2π/λ. using the fact that λ=v/f, find the wave numbers k1 and k2 corresponding to frequencies f1 and f2. express your answer as two expressions

Which radioisotope is used in dating geological formations?

How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?