A rock on top of a ledge has 50,000 J of energy. If it falls off the ledge to the ground below, how much energy is converted
to kinetic energy a the bottom of the drop?

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

Which proportionality applies to avogadro’s law?

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol