How can you tell something is matter?

Suppose the gravitational force between two spheres is 100 N. If the distance between the spheres is halved, what is the new gravitational force between them?

Determine the answer to the equation 30 km/h * 17 h =

Arrange the following substances in order of decreasing magnitude of lattice energy. Rank the compounds in order of decreasing magnitude of lattice energy. MgO, CaO, NaF, KCl

The potential energy of a catapult was completely converted into kinetic energy by releasing a small stone with a mass of 20 grams. The velocity of the stone when it reached the target was 15.0 meters/second.

Read the following experiment. Describe the experiment's results; identify which of Newton's laws is illustrated and how these results support this law. 1. Place a 3X5 card on top of a glass 2. Put a coin on the center of the card. 3.

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

If you had a positive 8 score on the sit-an-reach test you

65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids.

Near which location in New York State would a geologist have the greatest chance of finding dinosaur footprints in the surface bedrock?