How many electrons does it take to make one coulomb of negative charge?

a.

b.

c.

d.

e.


b.

Physics & Space Science

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A proton is to orbit Earth at the equator using Earth's magnetic field to supply part of the necessary centripetal force. In what direction should the proton move?

A) upward B) northward C) southward D) eastward E) westward

Physics & Space Science

What is the symbol for the element copper?

a. Co b. Ce c. Cr d. Cu

Physics & Space Science

__________is a measure of the agitation among the atoms and molecules of a material

A) Temperature B) Accretion C) Eccentricity D) Granulation

Physics & Space Science

Why does the Big Bang theory predict that the cosmic microwave background should have an essentially perfect thermal radiation spectrum?

A) This radiation came from the heat of the universe itself. B) The spectrum of pure hydrogen is a perfect thermal radiation spectrum. C) The spectrum of 75 percent hydrogen and 25 percent helium is a perfect thermal radiation spectrum. D) The light from all the stars and gas in the sky averaged over the entire universe is a perfect thermal radiation spectrum. E) The first stars that formed in the universe must all have had the same temperature.

Physics & Space Science