University Physics with Modern Physics 13th Edition Solution Manual

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1、1UNITS,PHYSICALQUANTITIESANDVECTORS1.1.IDENTIFY:Convertunitsfrommitokmandfromkmtoft.SETUP:1in.=.254cm,1km1000m,=12in.=1ft,1mi=5280ft.⎛⎞5280ft⎛⎞12in..⎛⎞254cm⎛⎞1m⎛⎞1kmEXECUTE:(a)100mi.=(100mi).⎜⎟⎜⎟⎜⎟⎜⎟⎜⎟=161km.⎝⎠1mi⎝⎠1ft⎝⎠1in.⎝⎠10cm23⎝⎠10m⎛⎞10m32⎛⎞10cm⎛

2、⎞1in.⎛1ft⎞(b)100km.=(100km).⎜⎟⎜⎟⎜⎟⎜⎟=32810ft.×3⎝⎠⎜⎟1km⎝⎠⎜⎟1m⎝⎠254cm..⎝12in⎠EVALUATE:Amileisagreaterdistancethanakilometer.Thereare5280ftinamilebutonly3280ftinakm.1.2.I3DENTIFY:ConvertvolumeunitsfromLtoin..S3ETUP:1L1000cm.=1in.=.254cm⎛⎞3⎛⎞.31000cm1in3E

3、XECUTE:0473L.×⎜⎟×⎜⎟=289in...⎜⎟⎝⎠1L⎝⎠254cm.E333VALUATE:1in.isgreaterthan1cm,sothevolumeinin.isasmallernumberthanthevolumeincm,3whichis473cm.31.3.IDENTIFY:Weknowthespeedoflightinm/s.tdv=/.Convert1.00fttomandtfromstons.S89ETUP:Thespeedoflightisv=.×30010m

4、/s.1ft=.03048m.1s=10ns.03048m.29EXECUTE:t==10210.×s102ns=.30010m/s.×8E855VALUATE:In1.00slighttravels30010m.×=.×30010km18610mi.=.×1.4.I33DENTIFY:Converttheunitsfromgtokgandfromcmtom.SETUP:1kg1000g.=1m1000cm.=3g⎛⎞1kg⎛⎞100cm4kgEXECUTE:193.×⎜⎟×⎜⎟=19310.×c

5、m33⎝⎠1000g⎝⎠1mmE33VALUATE:Theratiothatconvertscmtomiscubed,becauseweneedtoconvertcmtom.1.5.I3DENTIFY:Convertvolumeunitsfromin.toL.S3ETUP:1L1000cm.=1in.=.254cm.E333XECUTE:(327in)(254cm/in).×..×=.(1L/1000cm)536LE3333VALUATE:Thevolumeis5360cm.1cmislessth

6、an1in,.sothevolumeincmisalargernumberthanthevolumeinin..31.6.I22DENTIFY:Convertfttomandthentohectares.S42ETUP:100hectare10010m..=.×1ft=.03048m.©Copyright2012PearsonEducation,Inc.Allrightsreserved.Thismaterialisprotectedunderallcopyrightlawsastheycurre

7、ntlyexist.Noportionofthismaterialmaybereproduced,inanyformorbyanymeans,withoutpermissioninwritingfromthepublisher.1-11-2Chapter122⎛⎞43600ft,⎛⎞03048m..⎛100hectare⎞EXECUTE:Theareais(120acres).=⎜⎟⎜⎟⎜⎟486hectares..⎝⎠⎜⎟1acre⎝⎠100ft.⎝10010m.×42⎠1ft22=.(0304

8、8)m.2EVALUATE:Since1ft=.03048m,1.7.IDENTIFY:Convertsecondstoyears.9SETUP:1billionseconds110s.=×1day=24h.1h=3600s.9⎛⎞1h⎛⎞1day⎛⎞1yEXECUTE:100billionseconds.=(10010s).×⎜⎟⎜⎟=317y..⎝⎠⎝⎠⎜⎟3600s24h⎝⎠365daysE1y=.315610s×7assumes1y=.36524d,whichistheav