View Single Post
bobbles22
#1
Jan20-13, 04:00 PM
P: 17
Hi there,

I'm looking to find the most probable speed of atoms ejected from an oven.

Temp (T) is 900C (so 1173.15K).

The material is aluminium with molar mass 0.027kg mol-1

I've got the formula vmp=√(2kT/m)

I'm fine with everything above, but I'm not sure what value to use as the Boltzmann constant k.

Can anyone please help me here? Do I have the right equation and what value for the constant should I use (sounds silly, but it changes depending upon units. I've tried a couple but get silly tiny speeds out. I think I should expect something in the region of a few hundred metres per second).

Many thanks

Bob
Phys.Org News Partner Physics news on Phys.org
Detecting neutrinos, physicists look into the heart of the Sun
Measurement at Big Bang conditions confirms lithium problem
Researchers study gallium to design adjustable electronic components