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Light with a frequency of 2.98 × 1015 Hz strikes a metal surface and ejects electrons that have a maximum kinetic energy of 5.2 eV. What is the work function of the metal?
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- ?Lv 77 hours ago
E = hf - Φ
5.2 eV = 6.626e-34kg·m²/s * 2.98e15s⁻¹ * 1eV/1.6e-19J - Φ
Φ = 7.1 eV or 1.1e-18 J
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