p235sp16+exam+2+form+1.pdf - Physics 235 Spring 2016 Exam 2...

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Physics 235 Spring 2016 Exam 2: May 31, 2016 Form 1 Physics 235 Spring 2016: Exam 2 Form #1 You must enter your form number on your scantron. Please Print Your Name:_____________________________________________________ Instructions 1. Fill in your name above 2. Fill in your name , ID number , and form number on your scantron sheet 3. This will be a 90 minute, closed book exam. 4. You may use a calculator, please do not share calculators. 5. The exam includes 20 multiple choice questions which will be machine graded. Each question is worth 5 points. No partial credit will be given. 6. For this exam, you can bring two 3 × 5” index cards with any notes you wish to have. You may use a plastic ruler if you wish. You will also find physical constants that you might require listed below. 7. Please take your exam booklet with you and keep it safe and unaltered. Constants you might need: 9 2 2 9.0 10 Nm / C k = × 12 2 2 0 8.85 10 C /Nm ε = × g = 9.8 m/s 2 T m/A Proton charge: 19 1.6 10 C e = × Mass of the proton: 27 1.67 10 kg p m = × Mass of the electron: 31 9.11 10 kg e m = × Atomic Mass Unit: 27 1 amu 1.66 10 kg = × Speed of sound in air v = 340 m/s Speed of light in vacuum c = 3.0 × 10 8 m/s 23 5 1.38 10 J/K 8.62 10 eV/K B k = × = × 0 °C = 273.15 K 1 electron volt (1eV) = 1.6 × 10 -19 J 23 6.02 10 / mol A N = × centi (c) = 10 -2 , milli (m) = 3 10 , micro 6 ( ) 10 µ = , nano (n) 9 10 = , pico (p) = 12 10 , femto (f) = 15 10 , kilo (k) 3 10 = , mega (M) = 6 10 , giga (G) 9 10 = 1 Å=10 -10 m 7 0 4 10 µ π = ×
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Form1 1. Two magnetic dipoles are located on the y- axis, as shown. One dipole, A µ G , is located at the origin and its dipole moment is oriented along the + x axis. A second dipole, B µ G , is located at the dot. (The dot represents the position of B µ G , not its orientation.) What orientation of the second dipole, B µ G , will have the highest potential energy ? A. B µ G along the – y axis B. B µ G into the page C. B µ G along the + x axis D. B µ G along the + y axis E. B µ G along the – x axis
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