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(1) Photoelectrons from a material with a binding energy of 2.71 eV are ejected by 405...

(1) Photoelectrons from a material with a binding energy of 2.71 eV are ejected by 405 nm photons. Once ejected, how long (in s) does it take these electrons to travel 2.75 cm to a detection device?

(2) What is the wavelength (in m) of an electron moving at 3.20% of the speed of light?

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Answer #1

Qi Given ene energy E = 2.7leu 2.7.X.1:6X10-19 5 a = 405mm 4.05 810lm as E hu hv a. .; Va E2. = 2.76X16X20-19 x 4.058107 h 6.

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