556 Temperature*P19.24Model the wire as contracting according to ∆∆LLTi=αand then stretching according tostress====FAYLLYLLTY Tiii∆αα.(a)FYA T×××°°−−∆20 104 10451066N mm 11 101CC= 396 N22ej(b)∆TY×××°=°−stressNmCC2231020 1011 101368106To increase the stress the temperature must decrease to 35136101°− °=− °CCC.(c)The original length divides out, so the answers would not change.*P19.25The area of the chip decreases according toAATA Afi−γ1AATATi=+=+112γαbgafThe star images are scattered uniformly, so the number N of stars that fit is proportional to the area.Then NNT=+=+×°−°−°=1 25 342 1 2 4 68 10100205 33661∆.CCCstar images .Section 19.5Macroscopic Description of an Ideal GasP19.26(a)nPVRT⋅=−9 001 013 108 00 108314293253....atmPa atmmNmolKK.99 mol3ejafaf(b)NnN×=×A.99 molmolecules molmolecules26 02 101 80 102324P19.27(a)Initially, PVn RTi i=100100 27315.atmKafVnRFinally, fff f=nRi0 28040 0 273 15.KDividing these equations,
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .