12/1/10 1 Physics 12112/1/10 2 Physics 12112/1/10 3 Physics 121 Fdrag= 8μLv12/1/10 4 Physics 121 Flow in Flow out Pressure force upstream Pressure force downstream Drag force12/1/10 5 Physics 121 Pupstream A L Pdownstream A R F dragPA= 8μLvPA= 8μLQA P =8μLA2 Q =8μLR4 QP = ZQ12/1/10 9 Physics 12112/1/10 10 Physics 12112/1/10 11 Physics 12112/1/10 14 Physics 121 m1T1= m2T2m1(Tf T1) = m2(T2 Tf)m1Tf m1T1= m2T2 m2Tfm1Tf+ m2Tf= m1T1+ m2T2Tf=m1T1+ m2T2m1+ m2=m1M T1+m2M T2the changes in temp are opposite— one goes up the other goes down12/1/10 15 Physics 121 2211TmTm =12/1/10 16 Physics 12112/1/10 18 Physics 121 222111TcmTcm =12/1/10 19 Physics 121 TCQ =mcC =12/1/10 20 Physics 12112/1/10 21 Physics 121
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