A) What effect does the magnetic field haveon the speed of the particle? B)What

Question

A) What effect does the magnetic field haveon the speed of the particle? B)What are the direction of the accelerationof the alpha particle while it is in the magnetic field? C) Explain why the speed of the particle doesnot change even though an unbalanced external force acts onit. Thanks! A) What effect does the magnetic field haveon the speed of the particle? B)What are the direction of the accelerationof the alpha particle while it is in the magnetic field? C) Explain why the speed of the particle doesnot change even though an unbalanced external force acts onit. Thanks! A) What effect does the magnetic field haveon the speed of the particle? B)What are the direction of the accelerationof the alpha particle while it is in the magnetic field? C) Explain why the speed of the particle doesnot change even though an unbalanced external force acts onit. Thanks! An alpha particle (a He nucleus, containing two protons andtwo neutrons and having a mass of6.6410?27 {rm km}/{rm s} enters a uniform, vertical, 1.10 {rm kg}) traveling horizontally at 35.6

Explanation / Answer

(a) we know that           r = mv / qB               = 6.64 x 10-27 * 35.6 x 103 / 3.2 x10-19 * 1.10               = 67.15 x 10-5 m       As the magnetic field increases thespeed of the particle also increases. (b) The acceleration is perpendicular to v and B and so ishorizontal, toward the center of curvature of the particlespath (c) The unbalanced force is perpendicular to v, so it changesthe direction of v but not its magnitude, which is the speed.

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