I need an explanation on this and how to solve it using the calculator because i always get a different answer, also is the q equation:Q=1.602x10^-19Or Q= -1.602x10^-19Thanks in advance of, hetheEXAMPLE 1PATH RADIUS An electron (with mass of 9.11x10-31 ka) moves through a cathode-ray tube2.0x10 m/s perpendicular to a magnetic field of 3,5x10-3 T. The electric field is tumed omWhat is the radius of the electron's circular path?ormedance,nd1 ANALYZE AND SKETCH THE PROBLEMBO• Draw the path of the electron and label the velocity (v).lating• Sketch the magnetic field perpendicular to the velocity.heDiagram the force acting on the electron. Add the unknownquantity r of the electron's path.nentsedKNOWNUNKNOWNbertv = 2.0x107 m/sr = ?ameB = 3.5x10-3 Tm = me = 9.11×10-31 kgq = e = -1.602×10-19 Cced.2 SOLVE FOR THE UNKNOWNUse Newton's second law of motion to describe an electron in a cathode-ray tubesubjected to a magnetic field.mv2Bqv =le.mvr =Bq(9.11x10-31 kg)(2.0x107 m/s)(3.5x10-3 T)(-1.602×10-19 C)4 Subslitute m= 9.11X10¬31 kg, v= 2.0X107 m/s, B = 3.5X10-3T,q=-1.602X10-19 C.nt= -3.2x10-2 mled3 EVALUATE THE ANSWER• Are the units correct? The radius of the circular path is a length measurement,given in units of meters.• Are the values reasonable? Radii of a few centimeters are typical of this kind of apparatusand can easily be measured. The negative sign means that the circle curves in thedirection opposite that of a positive ion.S.1E

Magnetic force provides centripetal force F=qvB=mv²/r

PATH RADIUS An electron (with mass of 9.11x10-31 ka) moves through a cathode-ray tube at 2.0x10' m/s perpendicular to a magnetic field of 3,5x10-3 T. The electric field is turmed on. What is the radius of the electron's circular path? 1 ANALYZE AND SKETCH THE RROD

PATH RADIUS An electron (with mass of 9.11x10-31 ka) moves through a cathode-ray tube at 2.0x10' m/s perpendicular to a magnetic field of 3,5x10-3 T. The electric field is turmed on. What is the radius of the electron's circular path? 1 ANALYZE AND SKETCH THE RROD

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter24: Magnetic Fields

Section: Chapter Questions

Problem 98A

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