Electrostatic charges are created by .
stripping protons from the nucleus of a substance
stripping outer electrons from substances
running a substance through a magnetic field
running electric current through a substance

The speed of light can be used to measure the

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?

In an experiment, how can i change human errors? be specific.