prosiła bym o obliczenia i odpowiedz :)

1. [latex]Dane:\ f = 2,5*10^{20} Hz\ h = 6,63*10^{-34} Js\ \ E_f = hf = 1,6575*10^{-13} J [/latex] 3. [latex]Dane:\ lambda = 500 nm = 5*10^{-7} m\ c = 3*10^8 m/s \ \ f = frac{c}{lambda} = 6*10^{14} Hz [/latex] 4. [latex]Dane:\ E_f = 6,5*10^{-19} J\ E_k = 1,5*10^{-19} J \ \ W = E_f - E_k = 4*10^{-19} J = 2,5 eV[/latex]