A charged particle moves into a region of uniform magnetic field, goes through half a circle, and then exits that region. The particle is either a proton or an electron (you must decide which). It spends 130 ns in the region. What is the magnitude of B? Give your answer in T. (mproten-1.672x10-27 kg, melectron e=1.602x10-19 C) -9.11x10-31 kg, The answer is integer.
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