A proton moving at a speed of 4.2 × 10⁶ m/s cuts across the lines of a magnetic field at an angle of 78°.The strength of the field is 0.91 × 10−⁴ T.What is the magnitude of the force acting on the proton? (q_p = 1.6 × 10−¹⁹ C) A)1.3E-17 N B)3.1E-17 N C)6.0E-17 N D)7.2E-9 N E)9.6E-36 N

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The Answer of A proton moving at a speed of 4.2 × 10⁶ m/s cuts across the lines of a magnetic field at an angle of 78°.The strength of the field is 0.91 × 10−⁴ T.What is the magnitude of the force acting on the proton? (q_p = 1.6 × 10−¹⁹ C) A)1.3E-17 N B)3.1E-17 N C)6.0E-17 N D)7.2E-9 N E)9.6E-36 N

A Proton Moving at a Speed of 4