(Solved): In proton beam therapy, a beam of high-energy protons is used to deliver radiation to a tumor, kil ...

In proton beam therapy, a beam of high-energy protons is used to deliver radiation to a tumor, killing its cancerous cells. In one session, the radiologist calls How long should the beam be turned on to deliver this dose? for a dose of $$3.7\times 10^8$$ protons to be delivered at a Express your answer with the appropriate units. beam current of $$120\mathrm{nA}$$.