The magnitude M of an earthquake is measured using the Richter scale, 2 E M = 10310(EO) : M is the magnitude of the earthquake according to the Richter scale, E is the seismic energy released by the earthquake (in joules), and E0 is the energy released by a reference earthquake E0 = 104'4 joules. where In 2003, a major earthquake rocked southeastern Iran. The energy released by the earthquake is measured to be 8 x 1014 joules. (a) Calculate the magnitude of the 2003 Iran earthquake according to the Richter scale. (b) Calculate the seismic energy released by an earthquake of magnitude 8