Selected Solutions, Physics 103 Exam File

 MATH AND MEASUREMENT 3. ± 0.992 5. 0.75 7. 3´ 9. 10-12 13. 3.2´ 1016 ONE-DIMENSIONAL KINEMATICS 7. -1.1m/s2, -2.5m/s2, -38m 9. 3.7m/s2, 67m, 25m 11. 0.13m/s2, 0.58m, 5.2m, 0.71m/s TWO-DIMENSIONAL KINEMATICS 5. 57mi at 92o 7. 16mi at 76° , 5.9mi at 132° 9. a 15. 0.36s, 30m/s and -9m/s 17. 3.5m/s, 2m/s, 0.90s, 3.6m 19. 2m/s, -17m/s, 2.8s, 5.6m 19. 8.13m/s FORCES AND FREE-BODY DIAGRAMS 1. d 3. 150N, 260N, 8m at 104o 11. 24N, 17N, 3.4kg 15. 8kg, 833N 17. 230lb, 240lb, 23 19. 350N·m, 630N, 560N 21. 100kg, 1500N straight up 23. 3000Nm, 1.7´ 105N 25. 2.5m 27. 137N, 206N WORK AND ENERGY 1. 650N, 222N, 611N, 0J, 22kJ, -22kJ 3. 6.7N, -13.4U, 23.5J, 10J 5. -180MJ, 0, 0, 9900N, 1900N 9. 12kJ, 106kJ, 106N 11. 3.1kJ, 1.6kW, 11kW, 15hp 13. accel. up, no, 0.64, 200m, 7200lb× m/s, -4400 lb× m/s 15. 13.4m, 9.5m 17. c 19. 34J MOMENTUM/IMPULSE/COLLISIONS 1. 0.45N 5. -1.1m/s, 82% 7. the larger mass 11. 1.7´ 10-25m/s, No, 1J lost 13. 34mph at 11oN of E 15. 13m/s at 125o, -320kJ CIRCULAR MOTION/GRAVITY 1. 12kJ, 50kJ, 71m, 37m/s 3. 2.1m/s, 590N 5. 41m, -45kJ 7. 30km/s, 1.8´ 1029N× s, 2.7´ 1040kg× m2/s, 6.0´ 10-3m/s2 9. (rB/rA)2, (rB/rA)1/2, (rA/rB)3/2 11. 1/4, 1/4, /12, 1, 2 13. W=9.8N, T=27N, q=21° ROTATION 1. 20kJ, 2/5, 17m/s 3. 0.55Hz, 20m/s2, 9800N, 26m/s 7. 0.00225kg·m2, 1.83J, 33.1rev/m, no, yes 9. 20rad/s, 0.025kg·m2, 5.0J, 10J 11. 4.2m/s SIMPLE HARMONIC MOTION, WAVES 1. 200N/m, 1600J, 0.25Hz 3. 0.1J 5. 11cm 7. 0.995, 1.001 9. 8.9m, 15s, 6s 11. 1.005s 13. 200.668s, 200.658s, 0.01s or better 15. 0.993m, 4.9s 21. -0.2m 23. 437.5Hz, 569m/s, 566m/s, 0.773m, 1.294m 25. 1.3m, 850m/s, 30, 15 27. c 29. 1299.99989MHz, 1300.00011MHz, 220Hz 31. 10kHz, smaller 33. 0.34m, 1070Hz, 340m/s FLUIDS 1. 10.3m 3. 400kPa, 80kN, 630J 5. 98Pa 7. 8km = 5mi 15. 1470Pa, 79m/s, 180mph 17. a 19. 39Pa, 41m/s 21. 15Pa greater below, 1.3m/s faster above THERMODYNAMICS 1. 42MJ 3. c 5. 8.6km, 4.4´ 1018m3, 8.8km, 200m 7. P(kPa),V(m3),n(mole),T(K) = (101,160,6610,294), (101,168,6610,310) ,(106,160,6610,310), (202,80,6610,294) 11. 0.0158mole, 485cc, 1.37atm, isobaric 13. 1.2´ 104mole, 320m3, 4.1MJ 15. 13kJ, 18.5kJ, 31.5kJ 17. 9800m3, 99MJ, 250MJ 19. 300J, 1270cc, 380J 21. -459° F 23. d C 27. 36min 29. 17.2oC 31. 1%, 800m/s 33. 16 min, 110 min 37. 27%, 370J, 270J, -1J/K, +1J/K, yes. 39. 746K, 2s 41. d C, 4kcal, 14.65cal/K, 0.42cal/K 43. 3470J, 30%