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What magnetic field B is needed to keep 943-GeV protons revolving in a circle of radius 1.0 km ? Use the relativistic mass. The proton's "rest mass" is 0.938 GeV/c².
(1 GeV = 10⁹ eV) [Hint: In relativity, mrelv²/r = quB in still valid in a magnetic field, mrel = ym.]
Express your answer to two significant figures and include the appropriate units
B =
μA
Value
Units
?

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