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A2 Physics | Post your doubts here

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dont repeat your questions, wait for someone to answer, necause this will lead to crowding and reduce chances for other people.
Increase surface area of object.
uhmm, hold on for someone to scan it, cz mine is broken now :(
 
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heat lost by water =heat gained by ice to melt +heat gained by ice to change its temperature
m *c *deltatT =m *Lf + m * c * deltaT
0.095*4.2*10^3*(28-T) =0.012*3.3*10^5 +0.012*4.2*10^3T
11172-399T =3960 +50.4T
T =7212/449.4
=16'C
that question is about oscillation...o_O
 
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that question is about oscillation...o_O
LOLZ ya i answered m/j...sorry...
anyways...wat i did for bi. i drew a straight horizontal line 2cm above piston in b/w ab and cd...and the direction is upword from the line...
bii. the same line 2cm aboove the piston but the direction is downword...
how i arrived to this conclution! i did some calculation...
d=-4cos (220t)
so as at equalibrium the distance is 4cm above the piston...
cylinder Y.....-4=-4cos220t
cos220t=1
t=0,pi/2
d=-4cos(220*pi/2 + 2pi/2)
d=2
cylinder Z...-4cos(220pi/2 + 4pi/3)
d=2


hope u get my calculation step:)
 
Messages
532
Reaction score
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wat i did for bi. i drew a straight horizontal line 2cm above piston in b/w ab and cd...and the direction is upword from the line...
bii. the same line 2cm aboove the piston but the direction is downword...
how i arrived to this conclution! i did some calculation...
d=-4cos (220t)
so as at equalibrium the distance is 4cm above the piston...
cylinder Y.....-4=-4cos220t
cos220t=1
t=0,pi/2
d=-4cos(220*pi/2 + 2pi/2)
d=2
cylinder Z...-4cos(220pi/2 + 4pi/3)
d=2


hope u get my calculation step:)
 
Messages
532
Reaction score
151
Points
53
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