Radiated seismic energy from an earthquake is estimated by log E = 3.8+ 1.7M, where E is the energy in Joules () and Mis surface wave magnitude. (a) How many times more energy does an 8.4-magnitude earthquake have than a 5.5-magnitude earthquake? Round to the nearest thousand. (b) How many times more energy does a 5-magnitude earthquake have than a 4-magnitude earthquake? Round to the nearest whole number. Part 1 of 2 An 8.4-magnitude earthquake has approximately magnitude earthquake. times more energy than a 5.5- Part 2 of 2 A S-magnitude earthquake has approximately times more energy than a 4-magnitude earthquake.

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