Related to variance: standard deviation, variance analysis Variance The discrepancy between what a party to a lawsuit alleges will be proved in pleadings and what the party actually proves at trial.
Figure 2: Friction, pressure, and. separation are the major causes of. industrial static electricity. A charged insulator can remain charged for many hours. Opposite. polarity charges can exist on an insulator at the same time. Charges will not migrate on insulators.
When we charge something with static electricity, no electrons are made or destroyed. No new protons appear or disappear. Electrons are just moved from one place to another. The net, or total, electric charge stays the same.