A proton moves perpendicular to a uniform magnetic field B with arrow at a speed of 2.40 107 m/s and experiences an acceleration of 2.20 1013 m/s2 in the positive x-direction when its velocity is in the positive z-direction. Determine the magnitude and direction of the field. magnitude 0.00957 Correct: Your answer is correct. seenKey 0.00957 T direction −y Correct: Your answer is correct. seenKey −y