NAME PHYSICS 222 PRINT NAME FINAL EXAM MAY 6 2011 10 1 The rest energy of a proton is 938 MeV If the proton is moving at 08 c what is its kinetic enrgy a 235 MeV b 600 MeV c 625 MeV d 1560 MeV 1 4t i 10 2 If a particle in an infinite well has a ground state energy of I eV how much higher in energy is the next state a 1 cv b 2 eV c 3 eV d none of the above qV F eV 10 3 If 4 how many possibie values can the magnetic quantum number m have a3 b4 c8 d9 1 1 0 1 10 4 In the reaction n 9U 2 3 f yields 1 B a Kr neutrons how many neutrons are r eased a1 b2 c3 i4 It 1 11 JLL 9 25 5 An electron has a speed of O 75c Find the speed of a proton that has the same kinetic energy as the electron c9 7 KtE O 5 c q cXi i q cxk i iN I OO2 Z 17 25 6 A Hght source of wavelength A ifluminates a metal and ejects photoelectrons with a maximum kinetic of LO eV A second light source with half the wavelength of the first ejects photoelectrons with a maximum kinetic energy of 4 0 eV What is the work function of the metal energy eV 1 A 7 e Vr eV kI 4 i 7V 25 7 Through what potential difference would an electron have to be accelerated to give it a de Brogfle wavelength of iO m A b KlD 9 4 2 q I X I j eV VIst 7 V 10 8 For a particle of mass m in an infinite square well find the probably of the particle being in the first half of the well D t L t Z kx e C9iJM e k A IL 1 44 kx fD t e 4 d12 Ii r t t 4 t 5 r 0 e 4 LJ 0 x L
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