Chapter 4.3, Problem 10SP

(a)

To determine

To calculate: The magnitude of an earthquake if the magnitude of the earthquake was ${10}^{5.2}$ times $I_o$.

(b)

To determine

To calculate: The magnitude of an earthquake, if magnitude of the earthquake was ${10}^{4.2}$ times $I_o$.

(c)

To determine

To calculate: The relation between the intensities of two earthquakes of magnitudes 5.2 and 4.2 on the Richter scale, if intensity I is given by $M_L=\log \left(\frac{I}{I_o}\right)$.