A seismographic station receives S and P waves from an earthquake, separated in time by 16.6 s. Assume the waves have traveled over the same path at speeds of 4.50 km/s and 8.00 km/s. Find the distance from the seismograph to the focus of the quake.

Answer: fn = wcos50 = 38.89(9.81)(cos50) = 245.23 n

Ineed the problem dude

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.