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
Alexeev081 [22]
3 years ago
11

A parallel plate flow chamber is being designed to study the adhesion of leukocytes to endothelium. The channel width is 2cm; th

e viscosity of the tissue culture liquid medium is 0.0087 g/cm-s. Determine channel heights that can be used to generate wall shear stresses (i.e., ) as high as 20 dynes/cm^2 with flow rates less than 2 ml/s.
Physics
1 answer:
DanielleElmas [232]3 years ago
4 0

Answer:

The channel height is 0.0510 cm.

Explanation:

Given that,

Width w= 2 cm

Dynamic viscosity \mu= 0.0087\ g/cm-s

Discharge flow rate Q= 2 ml/s

Shear stress \tau= 20\ dynes/cm²

We need to calculate the channel heights

Using formula of maximum shear stress

\tau=\dfrca{6Q\mu}{H^2w}

H=\sqrt{\dfrac{6Q\mu}{\tau w}}

Put the value into the formula

H=\sqrt{\dfrac{6\times2\times0.0087}{20\times2}}

H=0.0510\ cm

Hence, The channel height is 0.0510 cm.

You might be interested in
The mass of the earth is 5.98 1024 kg, the mass of the moon is 7.36 1022 kg, and the distance between the centers of the earth a
Setler [38]

Answer:

 x_{cm} = 4.644 10⁶ m

Explanation:

The center of mass is given by the equation

         x_{cm} = 1 / M_{total}  ∑ x_{i}  m_{i}

Where M_{total} is the total masses of the system, x_{i} is the distance between the particles and m_{i} is the masses of each body

Let's apply this equation to our problem

        M = Me + m

        M = 5.98 10²⁴ + 7.36 10²²

        M = 605.36 10²² kg

Let's locate a reference system located in the center of the Earth

Let's calculate

       x_{cm} = 1 / 605.36 10²²   [Me 0 + 7.36 10²² 3.82 10⁸]

       x_{cm} = 4.644 10⁶ m

4 0
3 years ago
Why the reflected rays for a rough surface do not result in the formation of an image.
Oksana_A [137]

Answer:

this is because the light rays get reflected irregularly

Explanation:

8 0
2 years ago
A Boeing 777 aircraft has a mass of 300,000 kg. At a certain instant during its landing, its speed is 27.0 m/s. If the braking f
GarryVolchara [31]

Answer:

Speed of the airplane 10.0 s later = 12.2 m/s

Explanation:

Mass of Boeing 777 aircraft = 300,000 kg

Braking force = 445,000 N

Deceleration

            a=\frac{445000}{300000}=1.48m/s^2

Initial velocity, u = 27 m/s

Time , t = 10 s

We have equation of motion, v =u +at

            v = 27 + (-1.48) x 10 = 27 - 14.8 = 12.2 m/s

Speed of the airplane 10.0 s later = 12.2 m/s

6 0
3 years ago
In what direction is the weight vector always drawn?​
Varvara68 [4.7K]

Yo sup??

The weight vector is usually drawn vertically downwards from the centre of the body.

It can be respectively resolved as well.

Hope this helps

3 0
3 years ago
Two waves with amplitudes of 75 units and 74 units arrive at a point in a medium simultaneously. If the two waves are out of pha
avanturin [10]
If the two waves have the SAME FREQUENCY and are exactly
out of phase (180° apart), then the resultant wave will have the
same frequency and an amplitude of 1 unit.

If the two waves do not have the SAME FREQUENCY, then their
relative phase is meaningless.
6 0
3 years ago
Read 2 more answers
Other questions:
  • What would be some benefits of living on a planet with less surface gravity
    5·2 answers
  • Name two technologies that people in developing nations could benefit from.
    7·1 answer
  • A bicycle rider travels 50.0 km in 2.5 hours what is te bicyclist average speed
    8·2 answers
  • 3. What average net force is required to stop a 7 kg shopping cart in 2 s if it's initially
    10·1 answer
  • Find the intensity of a 55 dB sound given I 0=10^-12W/m^2
    6·1 answer
  • A 163 ‑turn circular coil of radius 2.65 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicu
    5·1 answer
  • Which of the following is a surface phenomenon A evaporation B boiling C melting D freezing​
    5·1 answer
  • Someone help me please
    12·2 answers
  • Calculate the reading on voltmeter v²​
    7·2 answers
  • Write two examples of machine which changes the direction of force​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!