Profit is producer surplus, minus fixed costs. In other words, its price minus variable costs. Profit, however, is price minus total cost. Since fixed cost is never negative, profit will always be less.
The atom is about 10-10 meters (or 10-8 centimeters) in size. This means a row of 108 (or 100,000,000) atoms would stretch a centimeter, about the size of your fingernail. Atoms of different elements are different sizes, but 10-10 m can be thought of as a rough value for any atom.
element with the same number of protons but a different number of neutrons. The hydrogen atom contains 1 proton and 1 electron. The radius of the proton is approximately 1.0 femtometer (10-15 meter), and radius of the hydrogen atom is approximately 53 picometers (53x10-12 meter). What percentage of the hydrogen atom's volume is o. 6.7 x 10-13 %.