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A beam of high-energy protons emerges from a cyclotron. Is there a magnetic field associated by these particles? Why or why not?
1. There is no magnetic field associated with these protons as there is an electric field around them.
2. There is a magnetic field associated with these protons as they are positively charged and in motion.
3. There is a magnetic field associated with these protons as they have very high energy.
4. There is no magnetic field associated with these protons as they have a positive charge.
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