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the work function of iron metal is 4.50 eV. what is the maximum speed of the...

the work function of iron metal is 4.50 eV. what is the maximum speed of the photoelectrons ejected from iron, when light with a wavelength of 142 nm is shined on its surface?

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E = hc -34 8 6162720x3y10 & -18 1.393 lo 142x10-9 J je 3 ggx60-16 - ey J. GX 18-19 8.7 hey Krb- E-work function K.E- 8.74er-uanera haux.6x10 - 12/31 11 / 2 (5.) X10-31). v² = 6.24 x26x10-19 v=1:22 x 10 m/sec Drywer

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