What happens when a roller coaster car moves down from the top of a hill?

How do similar (S-S or N-N) magnetic poles interact? A. They repel each other. B. They attract each other. Ĉ. They become demagnetized. D. They move closer together.

When we breathe, we inhale oxygen and exhale carbon dioxide plus water vapor. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?

Based on Newton's First Law, what would you expect to happen to a block that is pushed across ice and begins moving (You may assume there is no friction for this scenario? What would be necessary to cause the block to stop moving?

Name one reason life was impossible on early earth

Elephants are loaded into containers that are pulled up a ramp an inclined plane at 15 degrees to the ground. The container is held stationery by rope with a tension of 5000 newtons.

How big is a wifi pulse signal coming from your router? A) 10 meters B) 15 meters C) 5-10 meters D) 20-30 meters

Imagine you are in a music concert. What different sounds might you hear? How are these sounds made?

Dose aloe Vera grow in the mesa?

A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35 cm diameter stone is spinning at 200 rpm and has a mass of 28 kg. The coefficient of kinetic friction between the knife and the stone is 0.20.

What is the unit for force we use when calculating F=ma?