Which statement does not correctly describe a theory?

A. It is based on scientific evidence.

B. It can be used to make predictions.

C. It can be modified as new discoveries are made.

D. It is directly testable.

A collision between two billiard balls isa.) closely, a perfectly elastic collisionb.) an elastic or an inelastic collision, depending on the angel between the paths of the ballsc.) a perfectly inelastic collision.

A skydiver is descending with a constant velocity. Consider air resistance. Diagram the forces acting upon the skydiver

John is riding a ski lift to the top of Wildcat Mountain. He removes his gloves and rapidly rubs his hands together to warm them up. What happens when John rubs his hands? A. The skin on his hands rapidly conducts heat, similar to metal. B.

Within an internal combustion engine, the can-shaped component that moves up and down the cylinder and is the main moving part in the engine is the A. connecting rod. B. piston. C. spark plug. D. crankshaft.

You push a cart with mass 20 kg forward, giving it an acceleration of 2 m/s2. How much force did you apply?

Problem page a cyclist traveled 20 kilometers per hour faster than an in-line skater. in the time it took the cyclist to travel 80 kilometers, the skater had gone 30 kilometers. find the speed of the skater.

What is emitted during fission

If a magnet is broken into two pieces, what happens to the magnetic poles? One piece will have a north pole, while the other piece will have a south pole. Each piece will still have a north pole and a south pole.

How does a rubber rod become negatively charged through friction? a. It touches a negatively charged object, and protons move off of the rod. b. It touches a positively charged object, and electrons move onto the rod. c.

Coal limestone and limestone coquina are all examples of what?