Answered: “Diffusion” sounds slow—and over…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Concept explainers

Question

“Diffusion” sounds slow—and over everyday dis-
tances it is—but on the scale of a cell it is very fast. The aver-
age instantaneous velocity of a particle in solution—that is,
the velocity between the very frequent collisions—is
v = (kT/m)½
where k = 1.38 × 10–16 g cm2/K sec2, T = temperature in K
(37°C is 310 K), and m = mass in g/molecule.
Calculate the instantaneous velocity of a water
molecule (molecular mass = 18 daltons), a glucose mol-
ecule (molecular mass = 180 daltons), and a myoglobin
molecule (molecular mass = 15,000 daltons) at 37°C. Just
for fun, convert these numbers into kilometers/hour. Before you do any calculations, try to guess whether the
molecules are moving at a slow crawl (<1 km/hr), an easy
walk (5 km/hr), or a record-setting sprint (40 km/hr).

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions