Remember, half of the energy in an EM wave is in the E field, the rest is in the B field.
Thus, multiply E field energy by 2.
To calculate the energy of the wave you must then use the following equation: W = A*t*c*2*(1/2*E^2*Eo). Where, A = Area, t = time, c = speed of light (which is a constant), E = Electric field, E0 = vacuum permittivity (8.85*10^-12 Nm^2/C^2). Substituting W =(0.320)*(26)*(3*10^8)*(2)*((1/2)*(1.95*10^-2)^2*(8.854*10^-12)) = 8.40*10^-6 J
Mercalli Intensity Scale:
<em> is a seismic intensity scale used for measuring the intensity of an earthquake. ... It is distinct from the moment magnitude (Mw) usually reported for an earthquake, which is a measure of the energy released (sometimes misreported as the Richter magnitude, ML).</em>
B. Pairs
“Forces always come in pairs — equal and opposite action-reaction force pairs.”
<span>So what we can do is use the next formula
(<span>Vf</span>)</span>^2=(Vo)^2+2ad
So when we replace the data into the formula it goes
(25)^2 = o^2 + 2(129)a
625 = 258a
a = 2.42 distance/time/time
I hope this helps you
