Particle accelerators, such as the large hadron collider, use magnetic fields to steer charged particles around a ring consider a proton ring with 36 identical bending magnets connected by straight segments. the protons move along a 1.0-m-long circular arc as they pass through each magnet. part a what magnetic field strength is needed in each magnet to steer protons around the ring with a speed of 2.0 x 10 m/s? assume that the field is uniform inside the magnet, zero outside. express your answer with the appropriate units