29. If a potential difference of 220 V is applied across a conductor of
resistance 80 12, then the number of electrons flowing through the
conductor in one second is 1.72 x 10^19

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

not moving. pos accel,