As an animal ages:
a. It produces more cartilage to replace aging bone
b. It becomes less susceptible to disease
c. The reproductive system secretes fewer hormones
d. All answers are correct.
C
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Tolerance in most switches is about 2%; ____________________ is about 1%.
Fill in the blank(s) with the appropriate word(s).
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.
An electric circuit that contains a source and path without a load is called:
A) A short circuit. B) A fundamental circuit. C) A grounded circuit. D) An open circuit.
Steel piping material should be secured in a __________ while it is being cut.
A. clamp B. collar C. cuff D. vise