A long, horizontal wire is carrying a current I. A particle of mass m and charge q is fired horizontally at a speed vo. The initial velocity of the particle is parallel to the wire, and its initial position is a distance r directly below the wire, as shown in (Figure 1). What initial speed must the particle have for it to travel in a straight line? Do not ignore gravity. Express your answer in terms of I, m, q, r, μo, and the acceleration of gravity g. Part I Determine at what initial speed vo the particle will travel in a straight horizontal line. Express your answer in terms of some, all, or none of the variables m, q, vo, I, r, and the constants 9, Ho, and T. ► View Available Hint(s) Ψ—| ΑΣΦ ?

A long, horizontal wire is carrying a current I. A particle of mass m and charge q is fired horizontally at a speed vo. The initial velocity of the particle is parallel to the wire, and its initial position is a distance r directly below the wire, as shown in (Figure 1). What initial speed must the particle have for it to travel in a straight line? Do not ignore gravity. Express your answer in terms of I, m, q, r, μo, and the acceleration of gravity g. Part I Determine at what initial speed vo the particle will travel in a straight horizontal line. Express your answer in terms of some, all, or none of the variables m, q, vo, I, r, and the constants 9, Ho, and T. ► View Available Hint(s) Ψ—| ΑΣΦ ?