Please help me. 9. The Richter scale is used to measure the magnitude of an earthquake. The magnitude, R.
is given by the equation
R = 0.65log (0.392) +145
where E is the energy (measured in
kilowatt-hours) released by the earthquake. Determine the amount of energy released by an
earthquake of magnitude 7.5.
Part I: Rewrite the equation for the magnitude of an earthquake, using the magnitude of
7.5 given in the problem. (2 points)
Part II: Simplify the problem so that it is written in the form b= loga (4 points)
I
Part III: Solve the problem for E, the energy released by the earthquake (6 points)