Monday, 24 January 2011

19.3
Work Function = 3.413E-19

19.4
KE Max = hf - WFunction
=6.6E-19 * 3.2E-9 - 3.41E-19
=3.8E-19
KE = qStoppingVoltage
Vs = 3.8E-19/me=3.8E-19/91E-31
4.2eV

19.5
2.4E-19 - 3.6E-19 = -WFunction
Work Function = 1.56E-19

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