英文版的1Apieceofwoodhasalabeledlengthcalueof76.49cm.Youmeasureitslengththreetimesandrecordthefollowingdata:76.48cm76.47cmand76.59cm.Howmanysignificantfiguresdothesemeasurementshave?2Arethemeasurementsinproble

　　英文版的

　　1Apieceofwoodhasalabeledlengthcalueof76.49cm.Youmeasureitslengththreetimesandrecordthefollowingdata:76.48cm76.47cmand76.59cm.Howmanysignificantfiguresdothesemeasurementshave?

　　2Arethemeasurementsinproblem39accurate?Aretheyprecise?Explainyouranswers.

　　3Calculatethepercenterrorforeachmeasurementinproblem39

　　4Round76.51cmtotwosignificantfigures.Thenroundyouranswertoonesignificantfigure.

　　5Whichofthesemeasurementswasmadewiththemostprecisemeasuringdevice:8.1956m,8.20m,or8.196m?Explainyouanswer.

　　6Writeanexpressionforthequantity506000cminwhichitisclearthatallthezerosaresignificant

　　最好中英文双解哈答的好分数会多给的