Aristotle believed that everything on Earth is made of one of only 4 types of material: earth, air, water, or fire.

True

False

0.403 L is equal to: 4.03 mL 40.3 mL 403 mL 4,030 mL

There is a 50 g sample of Ra-229. It has a half-life of 4 minutes. How much will be left after 12 minutes?

Suggest why it might be a good idea to reduce the pressure of the air in car tyres if the car is to be driven over soft sand or over snow.

An atom has at least one positive proton and at least one negative electron. Which of the following is true about the protons and electrons in an atom? A. Protons and electrons orbit close together around a central nucleus. B.

A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot potential of kinetic? How much energy does the flowerpot have?

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?