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.

You record the length of different people's feet is this an example of a controlled experiment true or false

The planet Jupiter has an acceleration due to gravity that is approximately 2.4 times as much as the earth (23.2 m s2).

Results of attitude research with twins has revealed

A radar station detects an airplane approaching directly from the east. at first observation, the range to the plane is d1 = 354 m at 40° above the horizon.

quizle tphysics Al is floating freely in her spacecraft, and you are accelerating away from her with an acceleration of 1g. 5) How will you feel in your spacecraft? A) You will be floating weightlessly.

Which statement about how light travels is true? A Light waves need a medium to travel, and they travel at the same speed even if the light source is moving.

Explain why the car reaches a top speed even though the thrust Force remains constant at 3500N

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

Unless otherwise posted, what is the speed limit in a school zone? florida

If you put in 10 J of work to push 1 c of charge against and electric field what will be its voltage with respect to its starting position? when released, what will be it's kinetic energy if it flies past it's starting position?