What creates an electric force field that moves electrons through a circuit?

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

Does anyone have the answers to online physics course plato course physics, semester a v3.0