The Richter scale measures the magnitude, M, of an earthquake as a function of its intensity, and the intensity of a reference earthquake is given by Iₐ M=log i/i₀.
Which equation calculates the magnitude of an earthquake with an intensity 10,000 times that of the reference earthquake?
a. M=log (10.000)
b. M=log (i/10.000)
c. M= log (10.000/i₀)
c. M= log (1/10.000)