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Physics Paper 12 How was it

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For the electric field strength question, the answer for the graph was the one with a constant force (straight line with zero gradient) right? :)
 
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k dude u knw da friction is 6N
so force-friction=resultant (ma)
force= 2*10=20N friction=6N total mass is 8+2=10N substitue in da eqn
20-6=10a
a=1.4ms-2
hope u get it..
You can't take g as 10 in physics you have to take it as 9.81 and you get 1.70.Dont get confused between physics and mechanics.
 
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You can't take g as 10 in physics you have to take it as 9.81 and you get 1.70.Dont get confused between physics and mechanics.
k den check dis question nd da answer
Q11.....
 

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You can't take g as 10 in physics you have to take it as 9.81 and you get 1.70.Dont get confused between physics and mechanics.
this is how u do it:
first equation is from the 2kg body: 2(9.81)-T=2a
on 8kg body: T-6=8a
similtanoues equation by elimination ull get 2(9.81)-6=2a+8a
solve for a, a=1.362=1.4 :)
 

aom

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For the electric field strength question, the answer for the graph was the one with a constant force (straight line with zero gradient) right? :)
no it was C the decreasing line because this time they changed the question, they said plate seperation, but in the past years they said the distance of the particle from the plate.
 
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no it was C the decreasing line because this time they changed the question, they said plate seperation, but in the past years they said the distance of the particle from the plate.
They asked how the electric field varied from point X to point Y, both of those points being part of the electric field. I didn't see plate separation mentioned anywhere.
 
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i answrd B
why B? and what was B? can u plz explain, cz i remember calculating g and it was accurate.. so how can it be not accurate.. i dont really remember the choices, i remember the first 2 were inaccurate and the last 2 were accurate..
 
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why B? and what was B? can u plz explain, cz i remember calculating g and it was accurate.. so how can it be not accurate.. i dont really remember the choices, i remember the first 2 were inaccurate and the last 2 were accurate..
nopex...option B was that the calculated value of Gwas accurate but the students reading were in accurate and not always up to the precisionof the timing device, all points were valid....option D lacked physics essence by saying " it can be considered successful"..it didnt give a justification of why!!!
 
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agreeing on the option B . The last option did not give any specifics to why the experiment was successful and one reading really wasn't up to 2 dp which it shuld have been.
The question on the current and the speed of electrons... I put same speed as well... can anyone confirm?
 
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agreeing on the option B . The last option did not give any specifics to why the experiment was successful and one reading really wasn't up to 2 dp which it shuld have been.
The question on the current and the speed of electrons... I put same speed as well... can anyone confirm?
the currebt one was a tough one, you had to use velocity of electron formula I=navq...so since area and velocity are inversely proportional to each other, the speed will increase....and im confirmed on this...but i know 95% candidates did same speed ! ahahahhaha
 
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@ gud man,,,the gas could not have pushed the other side of the liquid without having pressure greater than atm pressure...o level concept
wghich option was wl/4 clockwise? Cuz i dont remember which one mine was , clockwise or anti
 
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