Physics 3 - pracf

Physics 3 - pracf - Physics 273 Practice Final Exam Fall...

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Physics 273– Practice Final Exam Fall 2010 Prof. Mohan Kalelkar Your name sticker with exam code 1. The exam will last from 4:00pm to 5:05pm. Use a # 2 pencil to make entries on the answer sheet. Enter the following id information now, before the exam starts. 2. In the section labelled NAME, enter your last name, then ±ll in the empty circle for a blank, then enter your ±rst name, another blank, and ±nally your middle initial. 3. Under STUDENT # enter your 9-digit Student ID Number. Under COURSE enter 273. Under CODE enter the exam code given above. 4. During the exam, you may use pencils, a calculator, and ONE 8 1 2 ′′ × 11 ′′ sheet of paper with formulas and notes. 5. There are 16 multiple-choice questions on the exam. For each ques- tion, mark only one answer on the answer sheet. There is no subtrac- tion of points for an incorrect answer, so even if you cannot work out the answer to a question, you should make an educated guess. At the end of the exam, hand in only the answer sheet. Retain this question paper for future reference and study. 6. Useful numerical constants are given on the next two pages. Before starting the exam, make sure that your copy contains the pages of constants and all 16 questions. Bring your exam to the proctor if this is not the case.
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Elementary charge e = 1 . 6 × 10 19 C 1 electron volt ( eV ) = 1 . 6 × 10 19 J Speed of light c = 3 × 10 8 m/s Planck’s constant h = 6 . 63 × 10 34 J · s = 1240 nm · eV/c ¯ h = h/ 2 π Avogadro’s number = 6 . 02 × 10 23 molecules/mole Electron mass = 9 . 11 × 10 31 kg = 0 . 511 MeV/c 2 = 0 . 000549 u Proton mass = 1 . 673 × 10 27 kg = 938 . 3 MeV/c 2 Neutron mass = 1 . 675 × 10 27 kg = 939 . 6 MeV/c 2 = 1 . 008665 u Hydrogen atom mass = 1 . 007825 u Atomic mass unit 1 u = 931 . 5 MeV/c 2 Fine structure constant α = 1/137 Hubble constant H = 0 . 0215 m/s/light year = 70 km/s/Mpc 1 parsec ( pc ) = 3.26 light years Powers of ten: femto(f) pico(p) nano(n) micro( μ ) milli(m) 10 15 10 12 10 9 10 6 10 3 centi(c) kilo(k) Mega(M) Giga(G) Tera(T) 10 2 10 +3 10 +6 10 +9 10 +12 THE LEPTONS (all spin 1 2 ) Mass (MeV) Common decays L e L μ L τ Antiparticle e ( . 511) Stable 1 0 0 e + ν e (0?) Stable (?) 1 0 0 ν e μ (106) e ν e ν μ 0 1 0 μ + ν μ (0?) Stable (?) 0 1 0 ν μ τ (1777) π π 0 ν τ , e
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Physics 3 - pracf - Physics 273 Practice Final Exam Fall...

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