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answers with the correct number of significant figures. Use additional paper if needed. mumenTcal Express wavelength in nm 1. The threshold frequency for the photoelectric effect in lead (Pb) is 1.00 x1015 sec. a) Express this value in electron volt (ev) (L15-4)? b) Determine the kinetic energy of a single Pb electron if the metal is hit by an electromagnetic radiation of 1.00 x 1016 sec? c) If the mass of an electron is 9.109 x 1031 kg, how fast is it travelling (Ekin = ½mv)? %3D

answers with the correct number of significant figures. Use additional paper if needed. mumenTcal Express wavelength in nm 1. The threshold frequency for the photoelectric effect in lead (Pb) is 1.00 x1015 sec. a) Express this value in electron volt (ev) (L15-4)? b) Determine the kinetic energy of a single Pb electron if the metal is hit by an electromagnetic radiation of 1.00 x 1016 sec? c) If the mass of an electron is 9.109 x 1031 kg, how fast is it travelling (Ekin = ½mv)? %3D

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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answers with the correct number of significant figures. Use additional paper if needed. Express wavelength in nm 1. The threshold frequency for the photoelectric effect in lead (Pb) is 1.00 ×1015 sec'. a) Express this value in electron volt (ev) (L15-4)? b) Determine the kinetic energy of a single Pb electron if the metal is hit by an electromagnetic radiation of 1.00 x 1016 sec? c) If the mass of an electron is 9.109 x 1031 kg, how fast is it travelling (Ekin = ½mv²)? 2. The work function (L14-4) for Al is 4.2 ev. What is the maximum wavelength of the electromagnetic radiation that will generate a photoelectric current?
Transcribed Image Text:answers with the correct number of significant figures. Use additional paper if needed. Express wavelength in nm 1. The threshold frequency for the photoelectric effect in lead (Pb) is 1.00 ×1015 sec'. a) Express this value in electron volt (ev) (L15-4)? b) Determine the kinetic energy of a single Pb electron if the metal is hit by an electromagnetic radiation of 1.00 x 1016 sec? c) If the mass of an electron is 9.109 x 1031 kg, how fast is it travelling (Ekin = ½mv²)? 2. The work function (L14-4) for Al is 4.2 ev. What is the maximum wavelength of the electromagnetic radiation that will generate a photoelectric current?
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