Use the following to answer the next 3 questions A cyclotron is a particle accelerator that is constructed of two hollow metal shells shaped like Ds in a perpendicular magnetic field created by magnets, as shown below. The entire apparatus is placed in a vacuum. An alternating voltage is maintained across the D separation. Positively charged particles such as protons are injected near the centre of the Ds and travel in circular paths caused by the external perpendicular magnetic field. The frequency of the alternating voltage is adjusted to increase the speed of the particles each time they move across the Ds' separation. Upper magnet Injection point DS Path of protons D separation Renib the Lower magnet Cyclotron Specifications Magnetic field intensity 0.842 T Average Voltage across D Separation 22000 V D Separation 4.80 cm 17. The direction of the magnetic field used to bend the protons in the circular path is A. towards the top of the page C. towards the bottom of the page B. into the page D. out of the page 18. The radius of the path of a proton travelling at 2.50 x 10 m/s is A. 32.3 m C. 2.20 cm B. 3.10 cm D. 13.3 cm 19. . Assuming voltage remains constant, calculate the speed of a proton after it passes once between the Ds if it enters the space between the Ds at 2.50 x10 m/s. A. 1.43 x 10 m/s C. 3.93 x 10 m/s B. 3.24 x 10' m/s D. 2.86 x 10 m/s Version: B