Interactions and Methods of Charging
When two opposite charges come together (such as positive + negative)
What does it mean to "attract"?
The type of force between two charges
What is an electrical force?
The symbol k in the mathematical form of electric force.
What is Coulomb's constant? (or electrical force constant)
The symbol G in the mathematical form of Newton's law of universal gravitation (see equation at right).
What is the gravitational constant?
When two like charges come together (such as positive+positive or negative+negative)
What does it mean to "repel"?
Rubbing a balloon with fur (friction, contact, induction, grounding)
What is charging by friction?
unit for Force (both gravitational and electric)
What is Newton?
The relationship between charges and electric force (direct, inverse, or inverse-squared)
What is a direct relationship?
The relationship between masses and gravitational force (direct, inverse, or inverse-squared)
What is a direct relationship?
The force of attraction between any two objects
What is the gravitational force?
Touching a Van de Graaff Generator with a metal sphere (friction, contact, induction)
What is charging by contact?
has an inverse-squared relationship with electric force and gravitational force
What is the distance between charges?
The relationship between distance and electric force (direct, inverse, or inverse-squared)
What is inverse-squared?
Two objects gravitationally attract with a force of 18 N. If the mass of one of the objects is halved, this is the new force of attraction.
What is 9N?
unit for charge
What is Coulombs (C)?
Method of charging where a charged object is attracted to any neutral object
What is charged polarization?
This would result in the greatest electrical force between 2 objects...
a. halving one of the charges
b. doubling one of the charges
c. halving the distance between the two charges
d. doubling the distance between the two charges
What is c. halving the distance between the two charges?
The repulsive force between two balloons with charges of 4.0 x 10-5 C that are held a distance of 0.10 m from one another
What is 1440N?
Two objects gravitationally attract with a force of 18 N. If the distance between the two objects' centers is doubled, this is the new force of attraction...
What is 4.5 N?
What happens when a charged object is brought to a neutral object
What is "attract" by charged polarization?
Balloons X , Y and Z are suspended from strings as shown at the right. Negatively charged balloon X attracts balloon Y and balloon Y attracts balloon Z. This is the charge of balloon Z.
What is "cannot be determined"? (Balloon Z can be positive, negative, or neutral)
The force of gravity on the Earth by the moon is (greater than, less than, or equal to) the force of gravity on the moon by the Earth
What is equal to?
Two charges electrically attract one another with a force of 18 N. If the distance between the two objects' centers is halved, this is the new force of attraction.
The gravitational force of attraction between a 70 kg student and a 1 kg book that are 0.5 meters apart
What is 1.87x10-8 N?
Two charged objects have a repulsive force of 8N. If the charge of one of the objects is doubled and the charge of the other object is tripled, this is a new electrical force.
What is 48N?