Homework Help: chem 101

Posted by Anonymous on Friday, April 13, 2012 at 2:32pm.

. In an electron microscope the electrons generate the
image. For one of the scanning electron microscopes
in our Central Analytical Facility, the electrons are
accelerated to have a kinetic energy of 200,000 eV.
Electrons with this kinetic energy have a velocity of 2.67 x 10^8 m/s, almost 90% of the speed of light.
What is the wavelength of the electrons traveling at
this very high speed?

I have the answer i wan the process :2.72 pm

chem 101 - DrBob222, Friday, April 13, 2012 at 5:39pm
wavelength = h/mv
h = Planck's constant
m = mass electron in kg.
v = velocity in m/s
2.72 pm is correct.

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