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.

What is the relationship between atomic radius, ionization energy, and electronegativity? What is the relationship between atomic radius, ionization energy, and electronegativity?

What are 3 types of muscle tissue still?

Why do we say that a baseball falls toward Earth, and not Earth toward the baseball?

How is force and distance and work related

Which process creates x-rays

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.

A force produces power p by doing work w in a time t. what power will be produced by a force that does six times as much work in half as much time?

A batter hits a baseball with a bat. The bat exerts a force on the ball. Does the ball exert a force on the bat?

In a nuclear power plant, the temperature of the water in the reactor is above 100°C because of what?

Determine the total mechanical energy of a 250 g baseball if it has a velocity of 30 m/s when it leaves the pitcher's hand 1.2m above the ground.