From which of the following do most astronomers today think that the solar system formed?

A. the sun

B. asteroids

C. shooting stars

D. a nebula

The radius of Mercury (from the center to just above the atmosphere) is 2440 km (2440 * 103 m), and its mass is 3 * 1023 kg. An object is launched straight up from just above the atmosphere of Mercury. a.

F=kxk = ? A.) F/x B.) x/F C.) F+x D.) F-x

Where do most chemical reactions in the body take place? A) acids and bases B) the blood C) solution D) lymph

Explain what happens to the energy in a group in a system if one object loses energy according to the Law of Conservation of Energy.

If a sound wave travels 680 m in 2 seconds and has a frequency of 400 hz, what is the wavelength of the wave?

Build a relationships during your career exploration is called

How does gravity affect projectile motion?

A 68kg man is carrying a box with a mass of 7 kg what is the weight of the man and the box together

What does Newton's third law say about why momentum is conserved in collisions? 1. Equal forces act for unequal times, so the change in momentum for both objects must be equal. 2.

A notebook sitting on a desk has 19 j of potential energy. What is the total mechanical energy of the notebook?