f04x3aan - = =- cI E m E m = 3.4 10 4 V/m b) P = IA = (1.5...

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NAME PHYS-1200 PHYSICS II QUIZ 3 DECEMBER 8, 2004 SOLUTIONS AND GRADING NOTES PART A. 1. D 6. D 2. B 7. A 3. D 8. A 4. C 5. E PART B . 1. _ T _ The greater the frequency of the incident light is, the greater is the stopping potential. _ F _ The greater the intensity of the incident light is, the greater is the cutoff frequency. _ F _ The greater the work function of the target material is, the greater is the stopping potential. _ T _ The greater the work function of the target material is, the greater is the cutoff frequency. _ T _ The greater the frequency of the incident light is, the greater is the maximum kinetic energy of the ejected electrons. 2. For an infinite square well , E n n 2 . ( a ) 3 2 – 1 2 = 8, ( b ) 5 2 – 4 2 = 9, ( c ) 4 2 – 3 2 = 7 b > a > c 3.
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NAME PART C . 1. a) c E I m 0 2 2 μ = , so ) W/m 10 m/s)( . 1 5 10 H/m)( . 3 0 10 4 ( 2 2 2 6 8 7 0 × × ×
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Unformatted text preview: = =- cI E m E m = 3.4 10 4 V/m b) P = IA = (1.5 10 6 W/m 2 )(100 m) 2 P = 1.5 10 10 W c) m/s 10 . 3 W) 10 5 . 1 ( 2 2 2 2 8 10 = = = = = c P c IA A c I area pressure F F = 100 N d) F = mg , so 2 m/s . 9 8 N 100 = = g F m m = 10.2 kg 2245 10 kg 2. a) d sin = m , so = =-sin . 2 0 m) 10 . 4 ( 1 sin 8 m d d = 1.1 10-6 m = 1.1 m b) a sin = m , so = =-sin . 5 0 m) 10 . 4 ( 1 sin 8 m a a = 4.6 10-7 m = 0.46 m c) 2 8 31 2 34 2 2 2 m) 10 kg)( . 4 0 10 ( . 2 9 11 s) J 10 63 . 6 ( 2 2--- = = = m h m p K el K el = 1.5 10-22 J = 9.4 10-4 eV = 0.94 meV d) y = D tan = (0.50 m) tan 2.0 y = 1.7 10-2 m = 1.7 cm...
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f04x3aan - = =- cI E m E m = 3.4 10 4 V/m b) P = IA = (1.5...

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