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July 30, 2014

Homework Help: *physics*

Posted by Beth Macbeth on Monday, March 24, 2008 at 11:31am.

Electrons accelerated by a potential difference of 12.87 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength.

I don't know what equation to use. Any help would be greatly appreciated.

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