Physics 5A (Fall 1997) - Answers to Even Numbered Problems

• HW #8 - due 10/21/97
  • 6.60 -
    • a. 80.6 kW
    • b. 157 kW
    • c. 477 kW
  • 7.4 -
    • a. 4900
    • b. 120,000
  • 7.10 - 0.28 kgm/s
  • 7.22 - -0.23 m/s
  • 7.34 -
    • a. 1.45 m/s
    • b. 0.735 J
  • 7.40 - 22^o
  • 7.42 - 390 m/s
  • 8.14 - 53,000 J
  • 8.42 - 0.93
• HW #9 - due 11/6/97
  • 9.12 - 1.6 x 10^-4 N-m
  • 9.14 - -1.9 m
  • 9.18 - 333 N
  • 9.20 - 700 N
  • 9.22 - 930 N
  • 9.34 -
    • a. .0465 kg-m²
    • b. 0.34 m
• HW #11 - due 11/18/97
  • 11.6 - -40^o
  • 11.10 - 28.57x10^-6 C^-1
  • 11.18 - 86.5 ^oC
  • 11.57 (answer in book wrong)
    • a. 198 W
    • b. 424 W
• HW #13 - due 12/4/97
  • 13.20 - T_c = -130^oC -> impossible
  • 13.22
    • a. 300 J
    • b. 300 J
  • 13.24 - 3000 MW, 2100 MW
  • 13.46 - 2.6x10³J/K
• HW #14 - due 12/11/97
  • 14.28 - 0.99 m
  • 14.34 - 4.4 m/s
  • 14.38
    • a. 9.47 s
    • b. 5.47 s