A piece of plastic has a net charge of +2.00 ?C. How many more protons than electrons does this piece of plastic have?
A)
1.25 × 1013
B)
1.25 × 1019
C)
2.50 × 1013
D)
2.50 × 1019
E)
0
A
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____ is a mineral made of oxidized hydrogen
Fill in the blank(s) with the appropriate word(s).
Balloons expand when they are heated because
A) the molecules inside become more massive. B) the molecules inside are moving faster. C) of the additional molecules in them. D) the molecules inside expand when they are heated. E) Nonsense--balloons don't expand when they are heated.
If we photograph a person's face using dim light and an extremely short exposure time, the film will reveal
A) a spread out but very fuzzy image of the face. B) a very dim image of the face. C) only a few separated tiny spots that don't much resemble the face. D) only a few separated interference lines. E) only a single tiny spot right at the center.
What reactions would start in its core?
A: Iron breaking into lighter elements B: Hydrogen fusing into Helium C: Oxygen burning D: Carbon burning E: None of the above