Question if hot yet answered Marked out of 4.03 '-l: ' Fiag question A proton is traveling in a STRAIGHT LINE North, parallel to the surface of the Earth through a magnetic field of strength 7.5 x 10'1\" T. The magnetic eld is oriented perpendicular to the velocity of the proton. Draw a freebody diagram of the proton, including the FORCE OF GRAVITY (1 mark) What is the orientation of the magnetic field in this scenario? (1 mark) At what velocity must the proton travel in order to remain traveling in a straight line? (2 marks) Question 3 h at 35*. a "save "e d Mar-(ed out of 6.0 [II Fag question In the previous lesson. you explored a question in which an unknown ion was accelerated by an electric eld. and using kinematics and ight time you were able to determine the mass of the ion. This technique is lmown as "Time~of-Flight" Mass Spectrometry. There is a second style of ion detection that takes advantage of the circular motion caused by the magnetic force acting on a moving charged particle. This problem focuses on the physics of this style of detector. An ion with a charge of+l.60 x 10-19(7 is accelerated in a powerful electric field. The mass of the ion is unknown. The ion starts at rest at the positive plate, and accelerates through a voltage difference of 5.00 x 103 V. The ion enters a magnetic eld of strength 0.815 T immediately after it leaves the electric field that caused the acceleration. At this point, it is traveling perpendicular to the magnetic field. In the field, the ion curves through a circle of radius = 5.0 cm, then strikes a detector. ACCELERATION IONISATION electromagnet ......................... to vac u um /1 pump vaporised sample DEFLECTION DETECTION amplifier chart recorder UsingJ-'olll' knowledge of electric fields, electric otential, and magnetic force on a moving chargg, determine the mass of the unknown ion. 6 marks