5. The circuit contains 3 resistors (R1, R2 circuit has two pathways: one path contains R: and Re, the other path contains R1 and Ra. Rzisin pa:aei with Rs; R1 is in series with the power source. a) What is the total resistance of the circuit if B1 = 20 0, Rz=100and Ra = 15 (1. 3T /1c b) Calculate Vz if Vs is 120 V. /3T /1c B. A jogger runs 6.0 km [E], then 4.0 km [N], and finally 2.0 km [W]. The entire trip takes 2.0 h to complete. a) Draw a scale diagram and determine the jogger's total displacement. /3T /1c Communication 1. Why do transformers only work with Alternating Current? 3C 2. Explain the concept of specific heat and how thermal energy calculation are affected by phase change of materials