Parallel wires carrying currents will exert forces on each other. Each wire produces a magnetic field, which influences the other wire. When the currents in both wires flow in the same direction, then the force is attractive. When the currents flow in opposite directions, then the force is repulsive.
Two parallel wires that are 17 mm apart each have a current of 3.2 amps.
Determine the magnetic field from one wire at the location of the second wire. (Include units with answer.)

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a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

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