Which of the following is true about rocks?

A. rocks are composed of only one mineral.

B. Rocks do not contain any nonmineral matter.

C. coal is not considered a true rock.

D. most rocks are a mixture of minerals.

Which statement best compares the momentum of a stationary truck and a car in motion? The moving car has less momentum than the stationary truck. The moving car and the stationary truck have the same momentum.

he adventurous robot M. A. N. D. I. is orbiting Saturn's moon Dione. She wants to cause an impact with themoon to kick up some of the surface dust so that she can do a spectral analysis of it.

The spreading of sound waves around openings in barriers is called

If absorbed internally, alpha particle emitters are the most damaging because alpha particles If absorbed internally, alpha particle emitters are the most damaging because alpha particles have the largest charge. have the greatest mass.

During a solar eclipse, you have the opportunity to observe stars around the periphery of the sun with a telescope. Which of the following is an observation that you would expect to make? A. The starlight is decentralized. B.

A car traveled 176 miles on 6.4 gallons of fuel the car averaged how many miles per gallon

Which of these describes how heat is transferred by radiation? A.) Warm air rises and takes heat with it; eventually it cools and sinks. B.) Sunlight travels through space without the aid of fluids or solids. C.

A body is moving with a velocity of 12m/s and it comes to rest in 2 minutes, what was the acceleration?

How can you find magnitude of velocity from a displacement time graph of an object?

Consider two rocks with masses of 1 and ten kilograms. What is the relation between their inertia's? Between their masses? Between their weights on earth?