final_prac_soln_07

# final_prac_soln_07 - Phy 9B#1 Page 1 of 1 Physics 9B Review...

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Unformatted text preview: Phy 9B, #1 Page 1 of 1 12/12/07 Physics 9B Review Session Final Exam Solutions [1]    a)   There are 3 translational degrees of freedom for the center of mass.  There are non-zero  moments of inertia about all three axes, so there are 3 rotational degrees of freedom.  There are  no vibrational modes because the rods are rigid.  õ  6 degrees of freedom. b)   For an adiabatic process,   P 1 V 1 ©    =   P 2 V 2 ©   õ   P 2  =   V 1 V 2 ⎛ ⎝ ⎜ ⎞ ⎠ ⎟ γ P 1  where  ©  =   (C p /C v )   .  Because  there are 6 degrees of freedom,   C v   =   6 2   R   =  3 R    and   C p  =   C v  + R   õ   C p   =  4 R   õ  ©  = 4/3 . õ   P 2   =   1 3 ( ) 4/3 5 atm ( )    =  1.16 atm....
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• Fall '08
• Cheng
• Physics, Inertia, Mass, Thereare3translationaldegreesoffreedomforthecenterofmass.Therearenon-zero momentsofinertiaaboutallthreeaxes,sothereare3rotationaldegreesoffreedom.Thereare novibrationalmodesbecausetherodsarerigid.õ6degreesoffreedom, dm dV, sin wefindforthesingleslitdiffraction

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