1/25 Homework (due 1/27 at 8 AM)

Which equation is used for gravitational force?

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Which equation is used for electrostatic force?

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What is the value of k?

What is the value of G?

There is a gravitational force of a pencil eraser on our school building. What is true about the gravitational force of our school building on the pencil eraser?

• It is more than the gravitational force of the pencil eraser on our school building

• It is equal to the gravitational force of the pencil eraser on our school building

• It is less than the gravitational force of the pencil eraser on our school building N

• We don't have enough information to know.

Both Object 1 and Object 2 ALWAYS exert _________ forces on one another.

• equal

• different

• similar

• negative

When you double mass or charge the force ______, and when you double distance the force ______.

• stays the same, doubles

• decreases, increases

Any of the three forces we learned have a ________ relationship with distance, meaning when you increase distance, you _____ force.

• directly proportional, decrease

• directly proportional, increase

• indirectly proportional, increase

• indirectly proportional, decrease

Which of the following forces did we NOT learn about?

• Electrostatic force

• Magnetic Force

• Normal Force

• Gravitational Force