Friday
October 24, 2014

Homework Help: physical science

Posted by jan on Friday, June 22, 2007 at 8:27pm.

A smoke particle undergoing Brownian motion in air has a mass of 2.00 x 10 -5 kg.
a) what is the its average velocity if the temperature is 300 K?

b) what is its average kinetic energy?

The average kinetic energy of a particle or molecule of any mass is
Eav = (3/2) k T
where k is the Boltzmann constant,
1.38^10^-23 J/K, and
T is the temperature in Kelvin

Once you have the average KE, get the average (actually, r.m.s) velocity from
(1/2) M V^2 = Eav
M is the particle mass

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

college physics - A smoke particle has a mass of 1.89 10-17 kg and it is ...
Physical Science - The frequency of circular motion for a charged particle ...
Science - Can someone explain 'simply' what Particle theory and Brownian motion ...
Calculus - The displacement (in meters) of a particle moving in a straight line ...
phsics - A charged particle is moving in a uniform magnetic field. Which of the ...
calculus - If an equation of motion of a particle is given by s(t)= Acos(ýt...
Physics - A particle starts from the origin at t = 0 and moves along the ...
CALCULUS - The displacement (in centimeters) of a particle moving back and forth...
science - The rest mass of a particle is 10^-24kg.It is moving with a velocity ...
Calculus - The displacement (in meters) of a particle moving in a straight line ...

Search
Members