Which of the following is the brightness of a star as we see if from Earth?

A. absolute magnitude

B. parallax magnitude

C. apparent magnitude

What is the address of the earth?

Which statement is true about an object moving in a circular motion due to centripetal force, F, when the mass is doubled? A. Its centripetal force would be doubled. B. Its centripetal force would be unaltered. C.

According to Newton's law of universal gravitation, which statement is true? A. Lighter objects experience a higher acceleration than heavier objects. B. Falling objects accelerate as they approach the ground. C.

Examine the scenario. Two neutral objects, a balloon and a sweater, are rubbed against each other. Which choice most accurately describes the behavior of electric charges in the neutral objects? Electrons move from the sweater to the balloon.

Two children with masses of 20 and 30 kg are sitting on a balanced seesaw. if the lighter child is sitting 3 m from the center, how far from the center is the heavier child sitting?

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4

How much power is reqired to lift a 10-n box 2 meters