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The symbol for deuterium is  . How many protons are there in a deuterium nucleus?
A
Scientists hope that some day they will be able to produce a theory which will combine the strong force, the weak nuclear force, and electromagnetism. This theory has been called
A) The Grand Unified Theory.
B) The Theory of Everything.
C) The Unified Field Theory.
D) The Electroweak Theory.
E) The Electrostrong Theory.
E
Composite particles that are composed of three quarks are called
A) leptons.
B) hadrons.
C) mesons.
D) bosons.
E) baryons.
C
Composite particles that are composed of two quarks are called
A) leptons.
B) hadrons.
C) mesons.
D) bosons.
E) baryons.
B
One of the particle groups listed below includes two other groups on the list. Which group is it?
A) leptons
B) hadrons
C) mesons
D) bosons.
E) baryons
A

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