According to quantum field theory, electrons
A) are the quanta of a matter field.
B) are the quanta of the electromagnetic field.
C) interact by exchanging quarks.
D) always come in pairs.
E) None of the above.
A
Physics & Space Science
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The half-life of a muon is 2.2 ?s. How fast is it moving relative to an observer who says its half-life is 4.4 ?s?
a. 0.87c b. 0.75c c. 0.97c d. 0.72c e. 0.50c
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Gold has a melting temperature of 1063?C and a latent heat of fusion of 12,700 J/mole.
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One pg (picogram) of 40K has how many nuclei?
a. 
b. 
c. 
d. 
e. 
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