Why Does My Electron Energy Calculation Keep Failing?

Thread starter brandon26
Start date Oct 15, 2005
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Electron

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The discussion centers on calculating the wavelength of an electron with a kinetic energy of 2.00 eV. The user attempted to use the formula E=h(c/n), incorrectly substituting n for wavelength. It was pointed out that the correct value for Planck's constant should be used, specifically 4.14 x 10^-15 eVs for energy in electron volts. The conversation emphasizes the importance of using the appropriate constants for accurate calculations. Accurate application of these values is crucial for solving energy-related physics problems.

Oct 15, 2005

brandon26

The kinetic energy of an electron is 2.00 eV. Find the wavelength.

I used E=h(c/n) where n=wavelength.
But the answer comes out wrong, please help.

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Oct 15, 2005

Chi Meson

Science Advisor

Homework Helper

did you use the correct value for Plank's constant (h)? Since you have energy in units of eV, you should use 4.14 x 10^-15 eVs.

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