Fall 2023 Semester Exam

Explain the relationship between the force (or elastic potential) of a rubber band and the distance it is stretched.-----choose 2 answers

• The more you stretch a rubber band, the less elastic potential energy it has.
• The more you stretch a rubber band, the more elastic potential energy it has.
• The more you stretch a rubber band, the more force it exerts.
• None of the above
• All of the above

What is each end of a magnet called?

• magnetic poles
• permanent poles
• south poles
• north poles

Magnetic poles that are unlike

• attract each other.
• repel each other.
• do not interact.
• point in the same direction.

What causes a compass to behave as it does?

• Earth’s gravity
• Earth’s shape
• Earth’s geographic north pole
• Earth’s magnetic field

The strength of the force of gravity depends on

• the masses of the objects and their speeds.
• the masses of the objects and the distance between them.
• the weight of the objects and their speeds.
• the masses of the objects and their weights.

Which of the following is an example of rolling friction?

• your shoes on a sidewalk as you walk
• bike tires on the road as you ride
• a boat on the water as it sails
• two hands rubbing together

Magnetic poles that are alike

• attract each other.
• repel each other.
• do not interact.
• have the same shape.

Which claim(s) can you make about magnetic forces?

• Every magnet has a north and south pole.
• A compass is a magnet that is attracted to Earth's geographic poles.
• A magnet can attract or repel another magnet from a distance.
• The area around each magnetic pole is called the magnetic field.
• Magnetic fields will only work if they can be seen.

What claim(s) can you make about this image?

• The ball has no motion
• The ball moves to the left with a force of 15N
• The ball moves to the left with a force of 35N.
• The ball moves to the right with a force of 10N.
• The ball moves to the right with a force of 35N.

What claim(s) can you make about this image?

• Object A moves to the right with a force of 4N.
• Object B moves to the right with a force of 2N.
• Object A moves to the right with a force of 2N.
• Object A has no motion
• Object B moves to the left with a force of 2N