(a)let E1 and E2 be the amplitude of the seismic wave in the first and secong earthquake respectively. ...b)let E1 and E3 be the amplitude of the seismic wave in the first and third earthquake respectively...
...log E = 1.5(7.2) + K ______(1) The energy released as seismic waves in an earthquake is 1/8 times log(E/8)=1.5M+K...
...7, 7 = 8.055e^(-0.007x) Radius of the area, x = 20.05 km As the seismic wave spread out uniformly, so the area, A = pix^2 = pi(20.05)^2 = 1300 km^2 (to the...