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earthquake swarm

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oldschool
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earthquake swarm

Postby oldschool » Wed Mar 14, 2012 4:20 pm

http://www.huffingtonpost.ca/2012/03/14 ... 44564.html

'Earthquake swarm' shakes New Brunswick village
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hyllisha
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Re: earthquake swarm

Postby hyllisha » Tue Apr 17, 2012 7:08 am

How much more powerful was the second earthquake than the first one? intensity of an earthquake is rated using the Richter scale. Richter scale rating of an earthquake of intensity x is given by R = log x/10 x0 where x0 is the intensity of an earthquake of a certain small size, 4.8. Earthquake A had a Richter scale rating of 6.4, and earthquake B had a rating of 7.2. How much more powerful was the 2nd earthquake than the first one?
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