On transistor spec sheet, the key difference between ?DC and ?DC is that:
A) ?DC represents IE/IC; ?DC represents IB/IC. B) ?DC represents IC/IB; ?DC represents IC/IE.
C) ?DC represents IC/IB; ?DC represents IB/Ic. D) ?DC represents IE/IC; ?DC represents IC/IE.
B
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This problem concerns a compound that has the following physical properties:
Critical Temperature = 1000 K Critical Pressure = 100 bar Vapor pressure at 450 K = 4 bar Molar Volume of saturated liquid at 450 K = 300 cm3/mol Enthalpy of vaporization at 450 K = 15 kJ/mol In the VAPOR and GASEOUS states only, it is described by the equation of state: Z = 1 + BP + CP2 Where B = -0.02 bar-1 and C = 0.0005 bar-2 A) Derive an algebraic (i.e., no differentials or integrals) expression for the fugacity of the compound in the gas/vapor state as a function of temperature, pressure, and known constants. B) Use the Clausius-Clapeyron equation to calculate the vapor pressure of this compound at 500 K. C) List the assumptions made in the derivation of the Clausius-Clapeyron equation and comment on how good or bad they are for the example in part B. D) Give your best estimate of the fugacity of this compound in the LIQUID phase at T=500 K and P=50 bar. You may assume your answer to part B is a correct vapor pressure, even if in part C you expressed reservations about its accuracy.
A towel and water or rubbing alcohol should be used to clean the heifer's:
A. eyes B. hooves C. nose D. ears
Medical alert dogs are trained to respond to subtle changes in their owner's scent or to clues in subtle changes in her/his behavior
A. True B. False
If an electromagnetic wave were radiated equally in all directions from a point source in free space, what would result?
A. Spherical wavefront B. Electric field C. Radio wave D. Polarization