Suppose the 2.0-kg model car in Exercise 6.43 is initially at rest at x = 0 and F S is the net force acting on it. Use the work energy theorem to find the speed of the car at (a) x = 3.0 m; (b) x = 4.0 m; (c) x = 7.0 m

Week8 Magneticfluxandinduction Flux=BAcos(theta) ThetaistheanglebetweenBandsurfacenormalvectorn Flux=BAwhenBfieldvectorisperpendiculartosurfaceplane(theta=0) Flux=0whenparallelbccos(90)=0 Faradayslawofinduction Wireloop,areaA,withtwo"leads",inBfield Magneticfluzthroughloop:theta=BAcos(theta) Faraday:anelectromotiveforce(voltage)inducedbetweenleads=|(change theta)/(changetime)| Inducedemfonlyifmagneticfluxchangesintime Zeroemffluxisconstantintime Timevaryingfluxthroughwireloopgeneratesemfvoltage FluxchangecoulddomefromchangesinBfield,looparea,ororientation Puttingresistoracrossinducedemfgeneratesinducedcurrent Lenz'slaw DirectionofinducedcurrenttriestogenerateB