Electromagnetic Forces: Net Force & Magnetic Force

Think about tug of war. Team X has three members who pull with the following forces: +200 N, +210N, and +185 N. Team Y has three members who pull with the following forces: -210N, -200N, -195N. Which team would win, Team X or Team Y AND by how much?

• Team X by +10

• Team X by -10

• Team Y by +10

• Team Y by -10

Tags

NGSS.MS-PS2-2

What is net force on an object sitting still?

• 0 N

• 20 N

• There are no forces applied to an object sitting still

• Cannot be calculated

Tags

NGSS.MS-PS2-2

You try to push your laptop across a table but it is not moving. What force might prevent the laptop from sliding?

• friction

• gravity

• magnetism

• normal

Tags

NGSS.MS-PS2-2

Given the definition, select the correct vocabulary word: the sum of all the forces acting on a mass

• net force

• magnetism

• gravitational field

• magnetic field

Tags

NGSS.MS-PS2-2

Given the definition, select the correct vocabulary word: a property of certain kinds of materials that causes them to attract ion or steel

• net force

• magnetism

• gravitational field

• magnetic field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Given the definition, select the correct vocabulary word: an invisible area of gravitational influence around a mass

• net force

• magnetism

• gravitational field

• magnetic field

Tags

NGSS.MS-PS2-5

Given the definition, select the correct vocabulary word: an area of magnetic influence around a magnet

• net force

• magnetism

• gravitational field

• magnetic field

Tags

NGSS.MS-PS2-5

Given the definition, select the correct vocabulary word: an object that sticks to iron (always a magnet no matter what)

• permanent magnet

• temporary magnet

• attract

• repel

Given the definition, select the correct vocabulary word: a piece of iron that behaves like a magnet only when it is under the influence of an external magnetic field

• permanent magnet

• temporary magnet

• attract

• repel

Given the definition, select the correct vocabulary word: to pull towards each other

• permanent magnet

• temporary magnet

• attract

• repel