20.) Explain: how the motion of a swing illustrates the transformation between potential and kinetic energy?

In all living cells dna controls cellular activities by

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.