Physics Chapter 20 Study Guide – Flashcards
Unlock all answers in this set
Unlock answersquestion
You can determine whether an object is positively or negatively charged by bringing an object with ____________ charge near it.
answer
A known
question
Pulling two side-by-side pieces of tape off the surface of a table gives the pieces of tape ___________ charge.
answer
The Same
question
Objects that have the same charge _______ one another.
answer
Repel
question
In a neutral atom, the number of ________ must equal the number of electrons.
answer
Protons
question
The designation of positive and negative for charges was first used by _____ _________.
answer
Ben Franklin
question
Touching a charged object often causes it to ______ its charge.
answer
lose
question
The force produced by charged objects can be _________ than gravitational force.
answer
greater
question
Removing electrons from an atom requires _________________.
answer
Friction/energy
question
A thundercloud becomes charged when positive and negative charges are ___________
answer
Separated
question
Atoms become charged when ___________ are removed or added.
answer
Electrons
question
Plastic
answer
-
question
Wool
answer
+
question
Hard rubber
answer
-
question
Glass
answer
+
question
The force, F ________ ________ with the square of the distance between the centers of the two charged objects.
answer
Varies Inversely
question
The force, F ________ _________ with the charge of the two charged objects.
answer
Varies directly
question
When the charges are measured in coulombs, the distance is measured in meters, and the force is measured in newtons, the constant, K, is ___________ N x m/C²
answer
9.0 x 10⁹
question
Coulomb's law can be used to determine ___ _________ of an electrical force.
answer
The magnitude
question
One coulomb is the amount of charge in __________ electron(s)
answer
6.24x10¹⁸
question
In an arrangement of three or more point charges, the direction of the resultant force on any charge can be determined by _______________________________________________.
answer
Finding the vector sum of the forces acting on that charge.