An alpha particle (consisting of two protons and two neutrons) is moving in a circle at constant speed, perpendicular to a uniform magnetic field applied by some currentcarrying coils. The alpha particle makes one clockwise revolution every 83 nanoseconds (see the figure). If the speed is small compared to the speed of light, what is the numerical magnitude E of the magnetic field made by the coils? What is the direction of this magnetic field? Proton Mass 2 Neutron Mass 2 1.67e-27 kg Proton Charge = +1.602e-19 C out of the page into the page J Additional Materials