1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Roman55 [17]
2 years ago
14

The moisture in hot, humid, stagnant air surrounding a cold-water pipeline continually diffuses to the cold surface where it con

denses. The condensed water forms a liquid film around the pipe, and then continuously drops off the pipe to the ground below. At a distance of 10 cm from the surface of the pipe, the moisture content of the air is constant. Close to the pipe, the moisture content of the air approaches the vapor pressure of water evaluated at the temperature of the pipe
What is the simplest differential form of Fick's flux equation for water vapor, NA?
Engineering
1 answer:
VladimirAG [237]2 years ago
6 0

Answer:

The simplest differential form of Fick's flux equation for water vapor is

\frac{1}{r} \frac{d}{dr} (rN_{rA} )=0

Explanation:

Fick's law has to do with the density of the particles is proportional to their concentration gradient. For this question some assumptions will be taken into account:

-The pipe is considered to be very long and diffusion only occurs in the r direction.

-The reaction is not homogeneous, therefore RA = 0

-The concentration of the component A is constant

-No mixing, only diffusion

Due to the complexity of the terms used in solving the Fick equation, the solution is found in the attached file.

Download docx
You might be interested in
Write two scnr.nextInt statements to get input values into birthMonth and birthYear. Then write a statement to output the month,
aalyn [17]

Answer:

import java.util.Scanner;

public class InputExample {

   public static void main(String[] args) {

       Scanner scnr = new Scanner(System.in);

       int birthMonth;

       int birthYear;

       birthMonth = scnr.nextInt();

       birthYear = scnr.nextInt();

       System.out.println(birthMonth+"/"+birthYear);

   }

}

3 0
3 years ago
U 4. Find 2 bridges in the US and answer the following:
Zarrin [17]

Answer:

Im guessing this is for CEA for PLTW, if so look up the exact assignment number and look at online examples of the exact same assignment.

Explanation:

6 0
3 years ago
Isn't this website cheating?
Orlov [11]

Answer: What website?

Explanation:

8 0
3 years ago
Read 2 more answers
An object of irregular shape has a characteristic length of � = 1.00 [�] and is maintained at a uniform surface temperature of �
Pani-rosa [81]

The correct question;

An object of irregular shape has a characteristic length of L = 1 m and is maintained at a uniform surface temperature of Ts = 400 K. When placed in atmospheric air at a temperature of Tinfinity = 300 K and moving with a velocity of V = 100 m/s, the average heat flux from the surface to the air is 20,000 W/m² If a second object of the same shape, but with a characteristic length of L = 5 m, is maintained at a surface temperature of Ts = 400 K and is placed in atmospheric air at Too = 300 K, what will the value of the average convection coefficient be if the air velocity is V = 20 m/s?

Answer:

h'_2 = 40 W/K.m²

Explanation:

We are given;

L1 = 1m

L2 = 5m

T_s = 400 K

T_(∞) = 300 K

V = 100 m/s

q = 20,000 W/m²

Both objects have the same shape and density and thus their reynolds number will be the same.

So,

Re_L1 = Re_L2

Thus, V1•L1/v1 = V2•L2/v2

Hence,

(h'_1•L1)/k1 = (h'_2•L2)/k2

Where h'_1 and h'_2 are convection coefficients

Since k1 = k2, thus, we now have;

h'_2 = (h'_1(L1/L2)) = [q/(T_s - T_(∞))]• (L1/L2)

Thus,

h'_2 = [20,000/(400 - 300)]•(1/5)

h'_2 = 40 W/K.m²

5 0
3 years ago
Yoda: sees corona<br> also yoda: wont last coronavirus will made in china it was!
zmey [24]

Answer:

yes!

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Write a modular program that finds the equation, area, and circumference of a circle, given the coordinates of the center of the
    11·1 answer
  • Explain the difference in the heat transfer modes of conduction and convection.
    14·1 answer
  • How many grams of perchloric acid, HClO4, are contained in 37.6 g of 70.5 wt% aqueous perchloric acid? How many grams of water a
    10·1 answer
  • Given the circuit at the right in which the following values are used: R1 = 20 kΩ, R2 = 12 kΩ, C = 10 µ F, and ε = 25 V. You clo
    11·1 answer
  • A preheater involves the use of condensing steam at 100o C on the inside of a bank of tubes to heat air that enters at I atm and
    14·1 answer
  • The chart shows the bids provided by four engineers to test a prototype.
    6·1 answer
  • Which scientist was famous for his laws on gravity?
    10·2 answers
  • A 40kg steel casting (Cp=0.5kJkg-1K-1) at a temperature of 4500C is quenched in 150kg of oil (Cp=2.5kJkg-1K-1) at 250C. If there
    13·1 answer
  • 11. Technicians A and B are discussing
    12·1 answer
  • HOLA COMO ESTAN TODOS
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!