Which of the following is quantized?
A) energy
B) radiation
C) number of atoms in a gold bar
D) electric charge
E) all of the above
Answer: E
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If the potential difference across the plates of a capacitor is doubled, what happens to the energy stored?
A. it stays the same B. it doubles C. it quadruples D. it halves E. it increases by a factor of 1.414
A sample of highly-radioactive material is somewhat
A) warmer than the environment. B) cooler than the environment. C) neither of these
If a neutral metal object has been charged by friction to a charge of one pC, what has happened to it electrically?
a. 
electrons have been added to it
b. 
protons have been added to it
c. 
electrons have been removed from it
d. 
protons have been removed from it
e. 
How does Pluto's behavior at perihelion support its planetary status?
What will be an ideal response?