PHYS 103 Online - Homework 7 Alex Burant Assigned: October 3, 2022 Due Date: October 10, 2022 To receive full credit, all work must be shown. Problem 1 a) Is it possible for the magnetic force on a charge moving in a magnetic field to be zero? Explain your answer. b) Is it possible for the electric force on a charge moving in an electric field to be zero? Explain your answer. c) Is it possible for the net force on a charge moving in a region with both electric and magnetic fields to be zero? Explain your answer. Problem 2 An electron moving at 4.00 103 m/s in a 1.25-T magnetic field experiences a 1.40 1016 N. What angle does the velocity of the electron make with the magnetic field? (Note: You should find two answers.) Problem 3 A cosmic ray proton moving toward Earth at 5.00 107 m/s experiences a magnetic force of 1.70 1016 N. a) What is the strength of the magnetic field if there is a 45 angle between the magnetic field and the proton's velocity? b) Is the value obtained in part a) consistent with the known strength of magnetic