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Dry ice is placed in the bottom of a capillary tube 6.2 cm long. Air is blown across the top of the tube. Calculate the ratio of the total flux to the diffusion flux halfway up the capillary for the following conditions:
(a) A temperature of - 124 C, where the vapor pressure is 5 mm Hg. Answer: 1.00.
(b) A temperature of - 86 C, where the vapor pressure is 400 mm Hg. Answer: 1.45.
A string of negligible diameter is drawn down the center-line of a pipe containing a Newtonian fluid. At what velocity, w, must the string be drawn in order to vaporize the fluid?
She wishes to calculate a project's PW with estimated costs of $35,000 now and $7000 per year for 5 years beginning 1 year from now with increases of 10 % per year thereafter for the next 8 years. Use a real interest rate of 12% per year to make t..
How long must the tube be made if the outlet oil temperature is 60 C? The Nusselt number for oil side is 5.56. F. water side.
1. Lab title and number 2. Purpose· Your interpretation of the purpose of the lab. 3. Theory - A brief discussion of the engineering or scientific theory that the lab exercise is based on.
Describe two potential options for improving the blood compatibility of biomaterials, discuss their potential for ultimately improving blood compatibility and describe any engineering challenges to implementing these to practice.
Why does Al as (Al sheet) react with HCl and Al as (Al foil) not react with HCl? and why do they both not react with a weak acid?and why does steel neither react with a weak nor a strong acid?
Estimate the number-average molecular weight that is required to give a tensile strength of195MPa.
Finding the Heat of Reaction (Enthalpy) from Heats of Formation
Look up the boiling point of propane. What disadvantages are there to using propane instead of gasoline as a fuel?
question 1what are the two main types of industrial ventilation which are used to control airborne contaminants in a
Construction will take two years, and the capital will be paid in two equal increments, at the end of the first and second years. The savings (income) can be taken as paid at the end of each year. Production will start on the completion of constru..
A nutritional Calorie is equal to 1000 calories (thermochemical calories), which is equal to 4.184 kJ. How many 8-in-high steps must a 180-lb man climb to expend the 400 Cal from the piece of cake? See Exercise 20 for the formula for potential ene..
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