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A beam of protons traveling at 1.20 km/s enters a uniform magnetic field, traveling perpendicular to...

A beam of protons traveling at 1.20 km/s enters a uniform magnetic field, traveling perpendicular to the field. The beam exits the magnetic field, leaving the field in a direction perpendicular to its original direction (the figure (Figure 1)). The beam travels a distance of 1.10 cm while in the field. a. What is the magnitude of the magnetic field?

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