Chapter 34303P34.35(a)Constructive interference occurs whendncosθλ=for some integer n.cosθλλλ==FHGIKJ=ndnn22n=±±012,,,…∴==°°−strong signal @ cos,1090 270(b)Destructive interference occurs whendncos=+FHGIKJ212:cos=+n±=°°−weak signal @ cos,110180afFIG. P34.35P34.36For the proton, Fma∑=yieldsqvBmvRsin.90 02°=.The period of the proton’s circular motion is therefore:TRvmqB22π.The frequency of the proton’s motion isfT=1.The charge will radiate electromagnetic waves at this frequency, with== =cfcTmcqB2.*P34.37(a)The magnetic field Bk=−120µωJkxtmaxcos±bgapplies for x>0, since it describes a wavemoving in the ±idirection. The electric field direction must satisfy SEB=×10µas ±±±ijksothe direction of the electric field is
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