The advantage of a fixed pulley on a flag pole is that
a. decreases the input force
b. increases the output force
c. changes the direction of the input force
d. increases the distance the flag travels

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.

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?