西尔斯大学物理双语版答案

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1、1.S:(answer)2.S:(provedc)3.S:(answer)D:4.S:=-6J(answer)5.S:,(answerofa)6rad/s(answerofa)rad/s2(answerofb)istimevaryingnotaconstant(answerofc)6.S:(answera)(answerb)7.G:m=1.0g,M=0.50kg,L=0.60m,Irod=0.060,R:Isys,v0S:Isys=Irod+(M+m)L2=0.060+(0.50+0.0010)×0.602=0.24(answer)thesystem’

2、sangularmomentumaboutrotatingaxisisconservativeinthecollision.(answer)D:Thebulletmomentum(beforeimpact),itsangularmomentumaboutrotatingaxiscanbeexpressedas(ascalar)8.S:9.S:10.S:(answer)611.S:fromandwecanget:(answerofa)ChangeofinternalenergybetweenAandB:(answerofb)Thenetworkofthe

3、cycle:(answerofc)Fromthefirstlaw:wecanderive:thenetheatofthewholecycleis(answer)V(m3)P(Pa)C13100300AB12.P(v)OvvFS:(answerofa)13.G:T1=T2=T,m1,p1,vrms,1,m2,p2=2p1,vavg,2=2vrms,1R:m1/m21.60=2×1.73S:vavg,2=1.60vrms,1=1.73vavg,2=2vrms,16(answer)14.S:dEint=dQ–dWdQ=dEint+dW=nCvdT+pdV15

4、.S:16.S:(R

5、and,,,mustbeconst.FromchargeconservationQAQBFigure(1)(2)ApplyGauss’lawintheclosedsurfaceshowninFig.·p(3)withinthemetal,whichleadsto(4)From(1),(2),(3),(4)yield:(answerofa)(6points)(1point)(1point)(answerofb)(2points)(answerofc)627.；atx=3m，6