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npthanks a lot bro, Jazak Allah khairn
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npthanks a lot bro, Jazak Allah khairn
keep in mind that the ground is frictionless and when the chair moves down the surface it is resting on will be reacting with forces in the opposite directions to the ones exerted by the ladderHI
does anyone know how 2 do this?
9702_s12_qp_12
question 14
thnx in advance!
Hey thanks dude! I'd totally forgotten about this stuff, even though I've already taken my AS papers. Thanks for the refresher! I owe you oneyour absolute error should be correct to 1s.f. and then the value should be correct to the same no. od d.p. as ur resulting absolute error is.
like if u hav calculated a length to be 20.324 +/- 0.346cm
then ur correct absolute error should be +/- 0.3
and thus the resulting value should be 20.3 as the absolute error comes to 1 d.p.
for another case you have the speed to be 326.55 +/- 1 m/s
then ur answer should be:
327 m/s
because the absolute errror is correct to 0 s.f.
even if the value does not have a number after the decimal but the absolute error is correct to 1 d.p. or so u write abc.0 insead of just writing abc
hope u get it
1357913579 u might wanna check this out ... maybe it will help ^_^
The Answer will be B that i think so,PLEASE do tell me if i am right?HI
does anyone know how 2 do this?
9702_s12_qp_12
question 14
thnx in advance!
The Answer will be B that i think so,PLEASE do tell me if i am right?
A: In A weight is acting downward and the normal reaction force at the end of ladder is upward and the force P is the normal reaction force by the wall in straight direction.Which means the ladder is not sliding and on the equilibrium postion
B: In B weight is acting downward and the normal reaction force at the end of ladder is upward and the force P force P isacting slightly upward because the ladder is sliding .
C: In C weight is acting downward again and the normal reaction force at the end of ladder is now not acting against the direction of weight it is slighlt inward.
D : In D weight is acting downward again and the normal reaction force at the end of ladder is again not acting against the direction of weight it is slightly Outward
Thus the Answer will be B
calculate the weight acting from the 2 kg block because that is the force moving the 8 kg block too:how to solve q13 ..m/j12 (12) ?
yep it isThe Answer will be B that i think so,PLEASE do tell me if i am right?
A: In A weight is acting downward and the normal reaction force at the end of ladder is upward and the force P is the normal reaction force by the wall in straight direction.Which means the ladder is not sliding and on the equilibrium postion
B: In B weight is acting downward and the normal reaction force at the end of ladder is upward and the force P force P isacting slightly upward because the ladder is sliding .
C: In C weight is acting downward again and the normal reaction force at the end of ladder is now not acting against the direction of weight it is slighlt inward.
D : In D weight is acting downward again and the normal reaction force at the end of ladder is again not acting against the direction of weight it is slightly Outward
Thus the Answer will be B
calculate the weight acting from the 2 kg block because that is the force moving the 8 kg block too:
2*9.81 = 19.62 N
the resultant force on the block would be this force minus the frictional force:
19.62 - 6 = 13.62 N
a = F/m= 13.62/8 = 1.7 m/s^2
what?? howww!!??!! :Obro i also calculated like this but the ans is 1.4 ...option a .....
what?? howww!!??!! :O
yeah i just saw.... if anyone tells the answer plz tag me in it becuz i reaallllyy wanna know .....idk....just check its ms ......the ans is A
i wasted about 1 hr on this single question but was unable to calculate Ans Ayeah i just saw.... if anyone tells the answer plz tag me in it becuz i reaallllyy wanna know .....
Din't get the λ part..Distance between 2 successive heaps (minimum points) = λ/2
39cm covers 5 times of this distance, therefore:
5(λ/2) = 39 cm
λ = 15.6 cm = 15.6 x 10^-2 m
v = fλ
v = 2.14 x 10^3 x 15.6 x 10^-2 = 334 ms-1
T - 6 = 8a --- ihow to solve q13 ..m/j12 (12) ?
Sorry dude i made a big mistake and not considered the Tension in my first answer: really apologize for tht:bro i also calculated like this but the ans is 1.4 ...option a .....
Did u understand?yep it is
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