Qualification > Sciences

PHYSICS AS HELP

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astarmathsandphysics:
Nope. Just am amateur

halosh92:

--- Quote from: astarmathsandphysics 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

--- End quote ---



thx alott!!!!!!!!!!!!!!! gr8 and fathomable  :D!!!!!!!

halosh92:

--- Quote from: astarmathsandphysics 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


could you please explain furthur on question 13 and 21
29)d conservation of energy 1/2mv^2=qV=qEx

--- End quote ---

SGVaibhav:

--- Quote from: saifalan on February 12, 2010, 03:42:22 pm ---And I thought astar was one of those computer geeks  :-\

--- End quote ---

--- Quote from: astarmathsandphysics on February 12, 2010, 03:51:29 pm ---Nope. Just am amateur

--- End quote ---

Aha amateur geek ;D

nox_fjmoony:

--- Quote from: astarmathsandphysics on February 12, 2010, 02:02:29 pm ---I try . And my pc doesnt work cos I misupgraded the os

--- End quote ---

how so?

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