« previous next »
Pages: [1]   Go Down

Author Topic: Help needed Physics (9702/04)May june 2003  (Read 698 times)

Offline shiplu

  • Newbie
  • *
  • Posts: 9
  • Reputation: 27
Help needed Physics (9702/04)May june 2003
« on: February 23, 2010, 09:04:42 pm »
Heellooo I need help on CIE physics Paper4 May June 2003 Question Number 1b..and c part please...ASAP
Logged

Offline astarmathsandphysics

  • SF Overlord
  • *********
  • Posts: 11271
  • Reputation: 65534
  • Gender: Male
  • Free the exam papers!
Re: Help needed Physics (9702/04)May june 2003
« Reply #1 on: February 23, 2010, 09:16:38 pm »
one mo
Logged

Offline astarmathsandphysics

  • SF Overlord
  • *********
  • Posts: 11271
  • Reputation: 65534
  • Gender: Male
  • Free the exam papers!
Re: Help needed Physics (9702/04)May june 2003
« Reply #2 on: February 23, 2010, 09:26:51 pm »
b)Because gravity is attractive so acts to decrease the distance between the two object.
c)dV=-GM(1/r2-1/r1)=-6.67*10^-11*6*10^24*(1/(6.4*10^6+1.3*10^7)-1/(6.4*10^6)
=41.9*10^6 J/Kg

Notice I had to change to m 6.4*10^3km=6.4*10^6m
Logged

Offline shiplu

  • Newbie
  • *
  • Posts: 9
  • Reputation: 27
Re: Help needed Physics (9702/04)May june 2003
« Reply #3 on: February 23, 2010, 09:57:47 pm »
Thanks bro...btI guess part b answer is not enough because its of 3 mark....
Logged
Pages: [1]   Go Up
« previous next »