ve Q3. Péclet number - We've seen the Péclet number Pé =, as a useful metric to determine if stirring (Pé > 1) is more efficient than diffusion (Pé < 1) for mixing solutions. "Stirring" here can designate any process which applies a force on the molecules, resulting in a velocity v. a) Show that the Péclet number, like the Reynolds number, is unitless. Let's think about why scale (l) matters for mixing. λ-DNA, a DNA polymer containing 48,502 base pairs, has a diffusion coefficient of D 6.4 x 10-13 m² s-¹. Under an electric field of 1 V/m, we can expect λ-DNA to reach a terminal velocity of 30 nm/s. = b) Find the Péclet number for a system of dimension of l = 10 cm. This corresponds to the scale of most benchtop instruments used to manipulate or separate biomolecules.

Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter6: Metabolism
Section: Chapter Questions
Problem 10RQ: In each of the three systems, determine the state of entropy (low or high) when comparing the first...
icon
Related questions
Question
Q3. Péclet number - We've seen the Péclet number Pé :
vl
as a useful metric to
determine if stirring (Pé > 1) is more efficient than diffusion (Pé < 1) for mixing
solutions. "Stirring" here can designate any process which applies a force on the molecules,
resulting in a velocity v.
a) Show that the Péclet number, like the Reynolds number, is unitless.
Let's think about why scale (l) matters for mixing. A-DNA, a DNA polymer containing
48,502 base pairs, has a diffusion coefficient of D =
field of 1 V/m, we can expect 1-DNA to reach a terminal velocity of 30 nm/s.
6.4 x 10-13m²s-1. Under an electric
b) Find the Péclet number for a system of dimension of l = 10 cm. This corresponds
to the scale of most benchtop instruments used to manipulate or separate
biomolecules.
Transcribed Image Text:Q3. Péclet number - We've seen the Péclet number Pé : vl as a useful metric to determine if stirring (Pé > 1) is more efficient than diffusion (Pé < 1) for mixing solutions. "Stirring" here can designate any process which applies a force on the molecules, resulting in a velocity v. a) Show that the Péclet number, like the Reynolds number, is unitless. Let's think about why scale (l) matters for mixing. A-DNA, a DNA polymer containing 48,502 base pairs, has a diffusion coefficient of D = field of 1 V/m, we can expect 1-DNA to reach a terminal velocity of 30 nm/s. 6.4 x 10-13m²s-1. Under an electric b) Find the Péclet number for a system of dimension of l = 10 cm. This corresponds to the scale of most benchtop instruments used to manipulate or separate biomolecules.
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Biology: The Unity and Diversity of Life (MindTap…
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781337408332
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning