A proton (q = 1.6 x 10 -19 C and m p = 1.67 x 10 -27 kg) is accelerated from rest by a potential difference of 350 V. It then enters a uniform magnetic field of magnitude 200 mT with its velocity...

A proton (q = 1.6 x 10^-19
C and m_p
= 1.67 x 10^-27
kg) is accelerated from rest by a potential difference of 350 V. It then enters a uniform magnetic field of magnitude  200  mT  with its velocity  perpendicular to the field . Find:  The speed of the proton, The radius of its path in the magnetic field, The period of the proton and its frequency