Which of the following formulas will you use to compare the magnitude of two earthquakes if you know that one has an amplitude 376,859 times bigger than the other?
1) A_(2)=10^(R_(2)-R_(1))
2) A_(2)=10^(R_(2)/R_(1))
3) A_(2)=10^(R_(1)-R_(2))
4) A_(2)=10^(R_(1)/R_(2))
