Recent content by Sam J

  1. S

    Calculate pressure difference in current-carrying mercury

    Homework Statement A vertical column of mercury, of cross-sectional area A, is contained in an insulating cylinder and carries a current I0, with uniform current density. By considering the column to be a series of concentric current carrying cylin- ders, derive an expression for the...
  2. S

    Estimate vibrational frequency of N2 molecule

    T (Kelvin) 170 500 770 1170 1600 2000 2440 C/NkB 2.5 2.57 2.76 3.01 3.22 3.31 3.4 Apologies, not sure how to post a table of data.
  3. S

    Estimate vibrational frequency of N2 molecule

    Homework Statement Experimental data for the heat capacity of N2 as a function of temperature are provided. Estimate the frequency of vibration of the N2 molecule. Homework Equations Energy of harmonic oscillator = (n+1/2)ħω C=7/2kB Average molecular energy = C*T But this is an expression...
  4. S

    Calculate the change of temperature in terms of T

    Not clear as to how your expression for W helps me here. Without knowing the values of W and p. I am also wondering why I cannot use the adiabatic constants to help me here. When I combine my expression for T' with TVγ-1 = constant Therefore T'(V+V')γ-1 = TVγ-1 I derive T=T' which I know...
  5. S

    Calculate the change of temperature in terms of T

    Two Thermally insulated cylinders, A and B, of equal volume, both equipped with pistons, are connected by a valve. Initially A has its piston fully withdrawn and contains a perfect monatomic gas at temperature T, while B has its piston fully inserted, and the valve is closed. Calculate the final...
Back
Top