If a proton emits a photon in a spin-flipping event in a magnetic field, which is true?
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If a proton emits a photon in a spin-flipping event in a magnetic field, which is true?
a. it flips from spin up to spin down.
b. it flips from spin down to the spin perpendicular to the magnetic field.
c. it flips from spin down to spin up.
d. it flips from spin up to the spin perpendicular to the magnetic field.
Answers: 3
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