A 7.0 m ordinary lamp extension cord carries a current, I = 7.0 A. Such a cord typically consists of two parallel wires carrying equal currents in opposite directions. The two wires are separated by about 4 mm. Find the magnitude and direction of the force that the two segments of this cord exert on each other. A) 2 N , The wires repel B) 2 N, The wires attract C) 0.02 N , The wires repel D) 0.02 N, The wires attract

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?