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physicsNYC
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Homework Statement
Couple of questions
State the De Broglie Wavelength for electrons with an energy of 50eV
and
the following is a picture is a diagram of the energy levels in Fe: http://www.freeimagehosting.net/image.php?eeddf8b465.jpg
What is the energy required to ionise Fe in in the ground state
Homework Equations
*lambda* = h/p = h/mv = h/sqr(2Em)
The Attempt at a Solution
for the first question i got 1.74x10^-10m but that is not the solution
and for the next question
is it -11.6 or +11.6