Part A In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2 eV . When the wavelength of the light is increased by 50%, the maximum energy decreases to 1.4 eV What is the work function of the cathode? Express your answer using two significant figures. Eo = 2.2 eV Submit Previous Answers v Correct Part B What is the initial wavelength? Express your answer using two significant figures. ? 1= 240 nm O Review your calculations and make sure you round to 2 significant figures in the last step. No credit lost. Try again. Submit Previous Answers Request Answer P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy I Permissions | Contact Us |
Part A In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2 eV . When the wavelength of the light is increased by 50%, the maximum energy decreases to 1.4 eV What is the work function of the cathode? Express your answer using two significant figures. Eo = 2.2 eV Submit Previous Answers v Correct Part B What is the initial wavelength? Express your answer using two significant figures. ? 1= 240 nm O Review your calculations and make sure you round to 2 significant figures in the last step. No credit lost. Try again. Submit Previous Answers Request Answer P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy I Permissions | Contact Us |
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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