A train travels 120 km in 2 hours and 30 minutes. what is it average speed?

How do you have a period

Two cars collide inelastically and stick together after the collision. Before the collision, the magnitudes of their momenta are P1 and P2.

A gas is matter that has a fixed volume and a fixed shape True False

A material that breaks down quickly in the environment is called?

When will magnets start moving up or down

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C

A motorist is driving at 20m/s when she sees that a traffic light 200m ahead has just turned red. She knows that this light stays red for 15s, and she wants to reach the light just as it turns green again. It takes her 1.

Does sound move as a longitudinal or transverse wave in a medium?

Which configuration would produce an electric current? a. Rotate a coil of copper wire between two magnets. b. Connect a wire between a copper and zinc strip sitting in a beaker of water. c.