Author Topic: PHYSICS AS HELP  (Read 1213 times)

Offline halosh92

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PHYSICS AS HELP
« on: February 12, 2010, 11:24:01 am »
2009 JUN physics cie
paper 1
Q9
Q11
Q13
Q20
Q21
q29

thxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ;D
everyday we wake up is a miracle, then how do we say miracles dont happen?????

Offline astarmathsandphysics

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Re: PHYSICS AS HELP
« Reply #1 on: February 12, 2010, 12:12:03 pm »
Q9
Q11
Q13
Q20
Q21
q29
q9 change in momentum =m(v-u)=0.1(20--30)=5 B
11)A the deeper you go, the greater the pressure
13)c 0.2*900=0.6*F
20)Y=Fl/Ae so F=YAe/l double the length means half the force and half the area means half the force
Acos 1/2*1/2=1/4
21)1/2*.3*12=1.8 A
29)d conservation of energy 1/2mv^2=qV=qEx

Offline Saladin

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Re: PHYSICS AS HELP
« Reply #2 on: February 12, 2010, 01:29:39 pm »
mr paul

u r getting fast these days

i never much of a chance to answer a physics or math question b4 u do.

Offline astarmathsandphysics

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Re: PHYSICS AS HELP
« Reply #3 on: February 12, 2010, 02:02:29 pm »
I try . And my pc doesnt work cos I misupgraded the os

Offline saifalan

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Re: PHYSICS AS HELP
« Reply #4 on: February 12, 2010, 03:42:22 pm »
And I thought astar was one of those computer geeks  :-\
Why so seroisee ??

Offline astarmathsandphysics

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Re: PHYSICS AS HELP
« Reply #5 on: February 12, 2010, 03:51:29 pm »
Nope. Just am amateur

Offline halosh92

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Re: PHYSICS AS HELP
« Reply #6 on: February 12, 2010, 05:03:56 pm »
Q9
Q11
Q13
Q20
Q21
q29
q9 change in momentum =m(v-u)=0.1(20--30)=5 B
11)A the deeper you go, the greater the pressure
13)c 0.2*900=0.6*F
20)Y=Fl/Ae so F=YAe/l double the length means half the force and half the area means half the force
Acos 1/2*1/2=1/4
21)1/2*.3*12=1.8 A
29)d conservation of energy 1/2mv^2=qV=qEx



thx alott!!!!!!!!!!!!!!! gr8 and fathomable  :D!!!!!!!
everyday we wake up is a miracle, then how do we say miracles dont happen?????

Offline halosh92

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Re: PHYSICS AS HELP
« Reply #7 on: February 13, 2010, 05:25:48 am »
Q9
Q11
Q13
Q20
Q21
q29
q9 change in momentum =m(v-u)=0.1(20--30)=5 B
11)A the deeper you go, the greater the pressure
13)c 0.2*900=0.6*F
20)Y=Fl/Ae so F=YAe/l double the length means half the force and half the area means half the force
Acos 1/2*1/2=1/4
21)1/2*.3*12=1.8 A


could you please explain furthur on question 13 and 21
29)d conservation of energy 1/2mv^2=qV=qEx
everyday we wake up is a miracle, then how do we say miracles dont happen?????

Offline SGVaibhav

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Re: PHYSICS AS HELP
« Reply #8 on: February 13, 2010, 06:51:31 am »
And I thought astar was one of those computer geeks  :-\
Nope. Just am amateur

Aha amateur geek ;D

Offline nox_fjmoony

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Re: PHYSICS AS HELP
« Reply #9 on: February 18, 2010, 06:06:14 pm »
I try . And my pc doesnt work cos I misupgraded the os

how so?

Offline astarmathsandphysics

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Re: PHYSICS AS HELP
« Reply #10 on: February 19, 2010, 12:15:40 am »
Is half working now