A basic observation of a star is how bright it appears. This brightness is known as the star's

A. luminosity.

B. absent magnitude.

C. apparent magnitude.

D. absolute magnitude.

0.5 kg air hockey puck is initially at rest. What will it's kinetic energy be after a net force of. 8 N acts on it for a distance of 2 m

Which groups of organisms became extinct during the Paleozoic Era

What does light do when it hits water?

Constructive interference definition physics

Which term describes energy stored within a stretched object? A. Thermal energy B. Electrical energy C. Electric energy D. Gravitational potential energy

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

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.