- Messages
- 54
- Reaction score
- 83
- Points
- 28
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k in q32...as l is doubled the cross sec area will be halved as well as it is an elastic material so R=2*2=4
32)
i thin
k in q32...as l is doubled the cross sec area will be halved as well as it is an elastic material so R=2*2=4
Question ?View attachment 45251 hey where am i going wrong?
i did it like this:- net emf=3-1.2=1.8V
V1=9/27*1.8=0.6V
0.6/9=0.067...y is my ans wrong?
thnx18)
power output P=IV
23 x 320 =7360 W
power input Power=energy/time
so P=mgh/t
and m/t is= 200 kgs-1
so 200 x 9.81 x 8 =15696 W
output/input x 100
7360/15696=0.468
nd 0.498 x 1ooo =46.8
so answer is D
Thought blockerQuestion 3, 4 , 5 , 8 , 11 , 14 , 15 , 19 , 24 , 33 , 35 , 37 , 38 PLEASEEEE!http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w13_qp_12.pdf
Please now I want to do my preparation... I'll solve it at night...
attatchment 4251Question ?
0.2 ?View attachment 45251 hey where am i going wrong?
i did it like this:- net emf=3-1.2=1.8V
V1=9/27*1.8=0.6V
0.6/9=0.067...y is my ans wrong?
.YEA//HW?0.2 ?
Here Resistors are connected in parallel, so there will be different currents in the circuit....YEA//HW?
thnks ...(silly me..:s)Here Resistors are connected in parallel, so there will be different currents in the circuit...
we are asked for the 9Ω resistor
so I = V/R
I = (3-1.2) / 9 = 0.2A
Help Student12 Please.thnks ...(silly me..:s)
Do some of them at least or by tonight.. :/ i know you have to prepare.Help Student12 Please.
yeah will do it tonightDo some of them at least or by tonight.. :/ i know you have to prepare.
LAST ANSWER NOW!!! BYEhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w12_qp_13.pdf
question 21
thought blocker????
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