An earthquake registers 6.1 on the richter scale. What is the rating on an earthquake twice as powerful?

Question

I know: M=I/Io

Then what do you do?

Answer 1

http://www.matter.org.uk/schools/content/seismology/richterscale.html

Is the epicenter in the desert? In the mountains? In a city? Is it a strike-slip, normal, or thrust type of earthquake?
http://earthquake.usgs.gov/learn/glossary/?term=strike-slip

Lots of different factors.

Answer 2

I was not given any information regarding these factors, I wrote out the question I was given

Answer 3

Be sure you read (and reread and reread, if necessary) the first paragraph in that first link I gave you above.

Read carefully and apply...

Answer 4

I'm sorry, I'm still confused.

Is it something like log(2) 6.1??

Answer 5

Add log 2 to 6.1

Answer 6

A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.9 102 µm. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth.)