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Unformatted text preview: Physics 124  Analytical Physics FINAL EXAM Tuesday, May 10, 2011, 4 – 7 PM ⇒ ⇐ SIGN HERE NOW: 1. Use a #2 pencil to make entries on the answer sheet. Enter ID informa tion items 25, now, on the answer sheet before the exam starts... 2. In the section labeled NAME (Last, First, M.I.) enter your last name, then fill in the empty circle for a blank, then enter your first name, another blank, and finally your middle initial. 3. Under STUDENT # enter your 9digit RUID Number. 4. Enter 124 under COURSE; you may ignore the section number. 5. Under CODE enter the exam code given above. 6. During the exam, you may use pencils, a calculator, and three 8.5 x 11 inch sheets with formulas and notes. 7. There are 30 multiplechoice questions on the exam. For each question, mark only one answer on the answer sheet. There is no deduction 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 the answer sheet and this SIGNED cover page. Retain the exam questions attached for future reference and study. 8. When you are asked to open the exam, make sure that your copy contains all 30 questions. Raise your hand if this is not the case, and a proctor will help you. Also raise your hand during the exam if you have a question. 9. Please have your student ID ready to show to the proctor during the exam. 10. Possibly useful information : the gas constant R = 8.314 J/(mol · K), the StefanBoltzmann constant is σ = 5.67 × 10 − 8 W/(m 2 K 4 ), in the ideal gas law R = 8.314 J/mol · K, 1 atm pressure ≈ 1 × 10 5 Pa, 0 ◦ C ≈ 273 K ≈ 32 ◦ F, at the earth’s surface g = 9.8 m/s 2 , the parallel axis theorem is I = I about cm + ml 2 and I = 1 × 10 − 12 W/m 2 in the dB equation. 1. A scientist in Antarctica observes “It is really cold today. The temperature is the same number in Fahrenheit and in Celsius.”’ What is the tempera ture? Pick the closest answer. a) 40 ◦ C b) 20 ◦ C c) 0 ◦ C d) 20 ◦ C e) 40 ◦ C 2. The temperature of a fixed volume of an ideal gas increases by 50 K. The pressure doubles. What was the initial temperature? a) Volume is needed to determine the answer. b) 50 K c) 100 K d) 50 K e) 100 K 3. A metal ball has a hollow core. The volume of the core is half the volume of the ball. The ball is uniformly heated so that its volume increases 10%. How much does the volume of the core change? Choose the closest answer. a) 10% b) 5% c) 0% – does not change d) 5% e) 10% 4. A 1.5 kg block of Aluminum with specific heat 910 J/(kg · K) and temper ature 60 ◦ C is placed in water initially at 25 ◦ C. The water and aluminum come into thermal equilibrium at 30 ◦ C. Assuming no heat transfer except between the water and Aluminum block, how much water is there? The specific heat of water is 4190 J/(kg · K). Choose the closest answer....
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 Spring '08
 Madey
 Physics, Thermodynamics, kg

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