Question

In: Mechanical Engineering

1. If the oxygen diffusion coefficient in tissue is assumed to be 1.1x10-5 cm2/s and fluid...

1. If the oxygen diffusion coefficient in tissue is assumed to be 1.1x10-5 cm2/s and fluid velocity is 1 mm/s, how large a distance between capillaries is required for convection to play an equally significant role as diffusion? Assuming an average distance between capillaries of 100 mm, does convection play a significant role? Use Peclet number to justify answers.

Solutions

Expert Solution


Related Solutions

4.14 (a) Calculate the diffusion coefficient for oxygen ions in a pure ZrO2 electrolyte at T...
4.14 (a) Calculate the diffusion coefficient for oxygen ions in a pure ZrO2 electrolyte at T = 1000∘C given ΔGact = 100 kJ∕mol, ?0 = 1013 Hz. ZrO2 has a cubic unit cell with a lattice constant a = 5 Å and contains four Zr atoms and eight O atoms. Assume that the oxygen–oxygen “jump”distance Δx = 1 2 a. (b) Calculate the intrinsic carrier concentration in the electrolyte givenΔh? = 1 eV. (Assume vacancies are the dominant carrier.) (c)...
3. (a) Determine the diffusion coefficient of O2 (σ = 0.40 nm2 ) at 1 bar...
3. (a) Determine the diffusion coefficient of O2 (σ = 0.40 nm2 ) at 1 bar and 25 o C? (b) The diffusion coefficient of C2H6 at 298 K and 1.00 atm is 1.307×10-5 m2 s-1 . What is the collision diameter of C2H6 based on its diffusion coefficient? (c) Calculate the rate of diffusion, Jz of a gas at 300 K with λ = 1.00 × 10-5 cm, d = 3.16 × 10-8 cm, and M = 30.0 g...
A reverse osmosis membrane has a water permeation coefficient of 2 x 10-5 cm3/(cm2-sec-atm). It is...
A reverse osmosis membrane has a water permeation coefficient of 2 x 10-5 cm3/(cm2-sec-atm). It is used to treat a brackish water stream at 25 0C that contains 5,000 mg/L of salt (NaCl). Question 1: Compute the osmotic pressure of the brackish feed stream Question 2 – If the feed pressure is 27.2 Atm and the membrane area is 5 m2, what is the permeate flow rate.
P Company acquired the assets and assumed the liabilities of S Company on January 1, 2018,...
P Company acquired the assets and assumed the liabilities of S Company on January 1, 2018, for $510,000 when S Company's balance sheet was as follows: S COMPANY Balance Sheet January 1, 2018 Cash $ 96,000 Receivables 55,200 Inventory 110,400 Land 169,200 Plant and equipment (net)  466,800 Total  $897,600 Accounts payable $  44,400 Bonds payable, 10%, due 12/31/2023, Par 480,000 Common stock, $2 par value 120,000 Retained earnings   253,200 Total  $897,600 Fair values of S Company's assets and liabilities were...
HW15-5) Oxygen Optimization is considering the caffeine project, which would involve selling caffeinated oxygen for 1...
HW15-5) Oxygen Optimization is considering the caffeine project, which would involve selling caffeinated oxygen for 1 year. The firm expects sales of caffeinated oxygen to be 99,000 dollars and associated costs from providing caffeinated oxygen (such as tanks, filters, etc.) to be 64,000 dollars. The firm believes that sales of regular oxygen, which is currently sold by the firm, would be 35,000 dollars less with the addition of caffeinated oxygen, and that costs associated with regular oxygen to be 28,000...
Metal Corp.just paid $1 dividends and is assumed to grow at 5% per year. The required return of the company is 15%.
Metal Corp.just paid $1 dividends and is assumed to grow at 5% per year. The required return of the company is 15%. The present value of the first 50 dividend payments is $10.39. What is the present value of all the dividend payments from year 51 to infinity assuming the required return and the growth rate stay constant? None of the answers is correct $.11 $.89 $10.39 $10.50
Problem 13-5 Coefficient of variation [LO13-1] Al Bundy is evaluating a new advertising program that could...
Problem 13-5 Coefficient of variation [LO13-1] Al Bundy is evaluating a new advertising program that could increase shoe sales. Possible outcomes and probabilities of the outcomes are shown next. Possible Outcomes Additional Sales in Units Probabilities Ineffective campaign 50 0.20 Normal response 115 0.40 Extremely effective 360 0.40 Compute the coefficient of variation. (Do not round intermediate calculations. Round your answer to 3 decimal places.)
Determine the Pearson product-moment correlation coefficient for the following data. x 1 10 9 8 5...
Determine the Pearson product-moment correlation coefficient for the following data. x 1 10 9 8 5 3 2 y 10 4 4 5 7 7 10 (Do not round the intermediate values. Round your answer to 3 decimal places.) Correlation coefficient, r = ___ The Y values are actually: Y 9 4 4 5 7 7 8
Exhibit 5 Month Market Asset R Asset S 1 3% –5% 4% 2 –5% -6% 3%...
Exhibit 5 Month Market Asset R Asset S 1 3% –5% 4% 2 –5% -6% 3% 3 1% –4% 4% 4 –7% 8% 3% 5 6% –9% 4% Use Exhibit 5. The data gives the historic return over the past five months for the market portfolio and two assets: R and S. Which of the answers below best describes the historic beta (β) for R and S? A. βR < 0; βS = 0 B. βR > 0; βS >...
1.Assume that X is a hypergeometric random variable with N = 15, S = 5, and...
1.Assume that X is a hypergeometric random variable with N = 15, S = 5, and n = 5. Calculate the following probabilities. (Round your answers to 4 decimal places.) a p(x=1) b p(x=5) c p(x≥2) 2. Consider the following discrete probability distribution. x −20 −5 10 20 P(X = x) 0.44 0.18 0.09 a. Complete the probability distribution. (Round your answer to 2 decimal places.) b. What is the probability that the random variable X is positive? (Round your...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT