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1\na)\n\nb)\n\n2)\nv3 = 1,6.10^{-19}\nv = 6,93 = 10^{-19}\n\nf = \\frac{6,93.10^{-19}}{6,98.10^{-19}} = 9,9 \\times 10^{-39}\n\n3)\nv = 2,1.10^{-19}\n\n\\frac{2,1.10^{-19}}{3,2.10^{-19}}\nv = 6,3.10^{-32}\n\n\\frac{1,6.10^{-19}}{7,3.10^{-20}} = 2,07.10^{-51}\n\nb)\n\n3,0.10^{-15} < 2,07.10^{-51}\n\nk_{0}^{2} = 2,3.10^{-08}\n\n4)\n\n\\frac{1,3.10^{-34}}{k_{0}10^{8} x 3 e^{8}}\n\nE = 6.10^{-10}\n\nE = 3,9.10^{-19}\n\n= 2,475 eV\n\nb) resumo da cínico e potencial\n\nc)\nE = 3,1.10^{-7} x 1,6.10^{-34}\nE = 1,98.10^{-40}