23CHAPTER OUTLINE23.1 Properties of ElectricCharges23.2Charging Objects byInduction23.3Coulomb’s Law23.4The Electric Field23.5Electric Field of a Continuous Charge Distribution23.6Electric Field Lines23.7Motion of Charged Particlesin a Uniform Electric FieldElectric FieldsANSWERS TO QUESTIONSQ23.1A neutral atom is one that has no net charge. This means that ithas the same number of electrons orbiting the nucleus as it hasprotons in the nucleus. A negatively charged atom has one ormore excess electrons.Q23.2When the comb is nearby, molecules in the paper are polarized,similar to the molecules in the wall in Figure 23.5a, and thepaper is attracted. During contact, charge from the comb istransferred to the paper by conduction. Then the paper has thesame charge as the comb, and is repelled.Q23.3The clothes dryer rubs dissimilar materials together as ittumbles the clothes. Electrons are transferred from one kind ofmolecule to another. The charges on pieces of cloth, or on
This is the end of the preview.
access the rest of the document.