Inv4.Exp1 Total D

The Coulomb constant in electric force calculations is represented by:

• q
• ke
• F
• r

Tags

NGSS.HS-PS2-4

Electric force is similar to gravitational force because both:

• Only work on positive charges
• Require contact between objects
• Follow an inverse square relationship
• Have the same strength

Tags

NGSS.HS-PS2-4

In a free-body diagram showing electric forces, what determines the direction of the force vector?

• Only the coordinate system
• Only the charge of one object
• The charges of both objects and coordinate system
• The distance between objects only

The superposition principle for electric forces is used when:

• There are exactly two charges
• Charges are moving
• There are more than two charges
• Charges are stationary

Tags

NGSS.HS-PS2-4

When a cotton sheet and polyester T-shirt interact in a dryer:

• Both become positively charged
• The polyester becomes positively charged
• Both become negatively charged
• The polyester becomes negatively charged

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Neutrons in an atom are:

• Negatively charged
• Positively charged
• Uncharged
• Variably charged

The relationship between force and charge in Coulomb's law is:

• Inverse
• Logarithmic
• Exponential
• Direct

Tags

NGSS.HS-PS2-4

When modeling multiple electric forces, each object's free-body diagram should show:

• Only the strongest force
• Two forces
• Three forces
• One average force

The process of charging by contact results in:

• Creation of new charges
• Equal and opposite charges
• Only positive charges
• Only negative charges

Electric forces between charged particles are:

• Always attractive
• Vector quantities
• Scalar quantities
• Always repulsive

Tags

NGSS.HS-PS2-4