2008BAP 1 Solutions

038 10 9 m for a correct answer kgim p 174 10 23 s p 1

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Unformatted text preview: m s -31 m 9.11 10 kg For correct substitutions into a correct expression for kinetic energy 1 K = mu 2 2 2 1 K = 9.11 10 -31 kg 1.91 10 7 m s 2 For a correct answer K = 1.66 10 -16 J 1 point ( )( ) 1 point (c) 3 points For any indication of conservation of energy K = qV For correct substitutions into a correct expression 1.66 10 -16 J K V = = q 1.60 10 -19 C 1 point 1 point ( ( ) ) For a correct answer V = 1.04 103 V 1 point 2008 The College Board. All rights reserved. Visit the College Board on the Web: www.collegeboard.com. AP PHYSICS B 2008 SCORING GUIDELINES Question 7 (continued) Distribution of points (d) 3 points For any indication that this process is the photoelectric effect K max = hf - f For recognizing that K max = 0 1 point 1 point f 4.5 eV = h 4.14 10 -15 eVis For a correct answer with units f = 1 point f = 1.09 10 15 Hz 2008 The College Board. All rights reserved. Visit the College Board on the Web: www.collegeboard.com....
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This note was uploaded on 02/09/2011 for the course PHYS 10 taught by Professor Davidnewton during the Spring '11 term at DeAnza College.

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