i Eu (base 10) logarithm. This is called the Moment Magnitude Scale (MMS), an alternative to the more well known Richter Scale. One earthquake has magnitude 3.9 on the W8. If a second earthquake has 750 times as much energy as the rst, nd the magnitude of the second quake. A formula for calculating the magnitude of an earthquake is M = glog ( ) that uses the common Round to the nearest hundredth. The magnitude of the second earthquake was Number