複選題

13. Two charged particles of the same charge q but different masses \( m_1 \) and \( m_2 \) are accelerated by a potential difference V. They then enter a uniform field B' following a circular path. Select the correct answers:

(A)The kinetic energy is qVB' for both particles
(B)the speed of \( m_1 \) is \( (2qV/m_1)^{1/2} \)
(C)the radius of the path in B' for \( m_2 \) is \( (m_2 V/qB'^i2)^{1/2} \)
(D)\( r_1/r_2 = (m_2/m_1)^{1/2} \)
(E)\( r_1/r_2 = (m_1/m_2)^{1/2} \)