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Problem: A coherent beam of 1.937 eV photons is incident on a double slit. A screen is L = 1.8 m away from the source and the width of each slit is a = .010 mm. This creates an interference/diffraction pattern such that the second interference maxima is y2 = 46 mm from the center line. If we wanted to duplicate this interference/diffraction pattern with mono energetic electrons of mass me = 9.1 x 10-31 kg,

A- What would the kinetic energy of one of these electrons have to be?

If possible just a brief explanation how you got the answer?

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