Which of these graphs would be correct for the speed of a ball thrown upward? 

A. A
B. B
C. C
D. D


Answer: C

Physics & Space Science

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Uranus' orbital period is 84 years. How far is Uranus from the sun?

What will be an ideal response?

Physics & Space Science

Observers in all reference frames will agree (perhaps by tracking individual electrons) that the bar’s left side becomes negatively charged and its right side becomes positively charged, meaning that just after the bar begins to move (but before the charges have time to pile up at the ends) some leftward electromagnetic force must have been acting on the bar’s electrons. What type of force is this in the implied reference frame of the diagram above?

A. The force is purely electric. B. The force is purely magnetic. C. The force is both electric and magnetic. D. There is no force on the bar’s electrons in this frame.

Physics & Space Science

In the Grand Unified Theory, the superforce was:

A) only dark energy. B) a union of the weak and electromagnetic forces. C) a union of all matter and energy. D) a union of the gravitational, strong and weak nuclear, and electromagnetic forces. E) only in effect at low energies.

Physics & Space Science

The study of rocks is called

a. petrology. b. mineralogy. c. paleontology. d. geology.

Physics & Space Science