ucks MAD311E-GEOPHYSICS HOMEWORK-4 Electric Prospection (Two-layered model) The apparent resistivity values were obtained by using the Wenner Method. Find the resistivity value of first and second layers (p1 and p2) and layer thickness of first layer (hi) by using these results. a (m) P/P Electrode spacing a(m) Apparent resistivity p. (ohm.m) 20 198 25 196 35 186 40 180 50 170 60 156 75 138 100 114 150 86 250 72 500 68 a k h/a h (m) h/a h (m) h/a h (m) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0.9 -1.0 1-0 0-9 k: 0-8 0-7 Palpi 0-6 0-5 Pa