Use coulomb's law, f=kq1q2/d2, to calculate the electric force on an electron (q=−1.6×10−19c) exerted by a single proton if the particles are 0.53×10−10m apart. the constant k in coulomb's law is 9.0×109 n⋅m2/c2. (the unit abbreviated n is the newton, the si unit of force.) express your answer using two significant figures.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?