he Prandtl number, P r equals fraction numerator C with hat on top subscript p mu over denominator k end fraction, is a dimensionless number, where p is the specific heat, is the viscosity, and k is the thermal conductivity. Determine the Prandtl number given the following information: p = 5 Btu/lbm R, =2.72x105 lbf s/ft2, and k=0.335 Btu/h ft F.

47.1

1.46

1.31x102

4.06x104