LR 09 03 2014 1 What is the energy of a photon that has a wavelength of 230 nm E hc 6 63 x 10 34J s 3 00 x 1017nm s 8 65 x 10 19 J 230 nm 2 Choose the correct answer Wavelength and frequency are directly inversely related 3 h According to quantum theory energy is emitted in whole number multiples of 4 Calculate the kinetic energy of an ejected electron in joules if the wavelength of light used to eject the electron is 380 nm and the binding energy is 1 75 x 10 19 J KE KE 5 hc W 6 63 x 10 34 J s 3 00 x 1017nm s 1 75 x 10 19 J 380 nm 5 23 x 10 19 J 1 75 x 10 19J 3 48 x 10 19 J Calculate the wavelength in nm needed to transition an electron from n 2 to n 6 in the hydrogen atom E 2 18x 10 18 J hc E 1 1 62 22 4 84 x 10 19 J 6 63 x 10 34 J s 3 00 x 1017nm s 411 nm 4 84 x 10 19 J 6 A tennis ball having a mass of 56 7 g is traveling at a speed of 48 5 m s What is the de Broglie wavelength of the tennis ball h mu 6 63 x 10 34 kg m2 s2 s 2 41 x 10 34 m 0 0567 kg 48 5m s 2 41 x 10 25 nm
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