A Deuteron,with the Same Charge but Twice the Mass of a Proton,moves

question 58

Multiple Choice

A deuteron,with the same charge but twice the mass of a proton,moves with a speed of 3.0 ´ 10⁵ m/s perpendicular to a uniform magnetic field of 0.20 T.Which of the paths described below would it follow? (q_p = 1.6 x 10^-19 C and m_d = 3.34 x 10^-27 kg)

• A)a straight line path
• B)a circular path of 1.6 cm radius
• C)a circular path of 3.1 cm radius
• D)a circular path of 0.78 cm radius

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