If a seismologist records the energy of P waves as 4.7 x 1010 joules and the energy of S waves as 8.3 x 107 joules, what is the total energy? What would the combined effect be on the Richter scale?
A) Total energy is 4.7 x 1010 joules and 4.2 on the Richter scale
B) Total energy is 1.3 x 1018joules and 9.1 on the Richter scale
C) Total energy is 3.7 x 103joules and -0.6 on the Richter scale
D) Total energy is 3.8 x 1018joules and 9.5 on the Richter scale
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