A wire along the x-axis carries current I in the negative xdirection through the magnetic field B u = B0 x l k n 0 x l 0 elsewhere a. Draw a graph of B versus x over the interval -3 2 l 6 x 6 3 2 l. b. Find an expression for the net force F u net on the wire. c. Find an expression for the net torque on the wire about the point x = 0.

Ch.3:Vectors A. ChapterGoals • Studyofwhatarescalarandvector • Studyofhowtooperatevectorsincludingaddand subtrac▯on,anddotandcrossproduct • Studyofwhatareunitvector • Studyofhowtorepresentandoperatevectorsusing components Ch.3:Vectors B.ScalarsandVectors • Scalars:quan▯▯esthathavenotdirec▯ons,e.g.:mass, distance,speed,density,▯me,etc. • Vectors:quan▯▯esthathavedirec▯ons,e.g.:displacement, velocity,accelera▯ons,force,etc. C.AddingVectors • Denotedby: A −A A = A is the magnitude • AddingVectors:trianglerule. C = A+B Ch.3:Vectors • Laws