Sian and Daniel are researching information on earthquakes in the U.S. One of the largest was centered in San Francisco in 1906. It measured 7.8 on the richter scale.
a. find the amount of engr. released by the earthquake.
b. Sian says the amount of energy released was 3.16 x 10^23 ergs, Daniel says it was 10^23.5 ergs. who is correct? explain how