Electric Charges and Forces

Electric Charges and Forces Principles

Electric Charges and Forces Principles

Articles
Title
A negatively charged object is placed near, but not touching, a neutral conductor. As a result, the two objects are attracted to each other. Which of the following is true?
Sparks are often observed (or heard) on a dry day when clothes are removed in the dark. Explain
How many electrons are responsible for a charge of -9.6 C?
Consider an isolated, neutral system consisting of wool fabric and a rubber rod. If the rubber rod is rubbed with wool to become negatively charged, what can be said about the wool fabric?
A carbon nucleus has 6 protons. What can be said about the electrostatic force between an orbital electron and the carbon nucleus?
What can be said about a sphere that has a net charge of +4.0 X 10^-15 C?
Three particles are located on a coordinate system. An electron is located at the origin, a proton is located at (0, 1), and an electron is located at (1, 0). What is the direction of the net electrostatic force on the electron located at the origin?
A hydrogen nucleus (charge +e) and a beryllium nucleus (charge +4e) experience a force, F. Which of the following expressions may be used to solve for the distance between the nuclei?
Two protons are 1.0 µm apart. What is the electric force between them?
A helium atom has two protons in its nucleus. If the attractive force between an orbital electron and the nucleus is 4.8 X 10^-7 N, what is the atomic radius of a helium atom?

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