‚Äčthe recent 2015 Nepal earthquake was recorded to have had a magnitude of a 7.8.

Mathematics
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the recent 2015 Nepal earthquake was recorded to have had a magnitude of a 7.8 on the Richter scale. 

In contrast the 1989 Loma Prieta earthquake was recorded to have had a magnitude of 6.9 on the Richter scale, how much more energy was released in the Nepal earthquake? In other words how much stronger was the nepal earthquake
Update: I do not know how accurate these numbers are I am just doing a math problem my teacher made up.

Can you please tell me if 28.8 is the correct answer?
May 4th, 2015

Each unit increase of magnitude on the Richter scale corresponds to a 31.6 times greater amount of energy.

So, when comparing the Nepal earthquake of 7.8 to the Loma Prieta earthquake of 6.9 the difference in magnitude is

7.8 - 6.9 = 0.9

Then in terms of the amount of energy

(0.9)(31.60) = 28.44  times greater

May 4th, 2015

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