1. Think about this question. If the charge of a proton is 1.6 x 10^-19 coulombs, how many protons would be required to make 1 coulomb of charge? It's a big number, by the way. (The answer is the same for -1 C and the number of electrons required.)
2. Look up Coulomb's law and write a related equation. Identify what the variables mean.
3. What are the main differences between an electron and a proton?
4. Look at the Standard Model chart, posted earlier - see if anything jumps out at you.
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