*** was that(physics paper 3)

[shalala]

Didn't have time to do ittt (
How many mark do you think you'll get??
I was expecting to do much better!
For the last question did you write for A: resistor and for B: LED
and for the third A should be replaced by a thermistor and b by a resistorrrr???

i think dats wat i got.

you add the resistance that awas in parralel
and then use V = IR
so v = 6
and I is equal to the current in you find in B + 0.8
and R is equal to the current in parralel X the Resistor we need to find
i got 1.8 Ohms

 

[shalala]

For this i wrote the base of Y is wider? think its correct?? :S

the Pistons i wrote that it need mor force because more area and pressure is constant so the force increase
the reason it moved less i wrote it had much more area and that it required more force
the air bubbles in the oil will cause the oil to become compressable hence reducing the efficency or function of the piston

 

[Hamzeh S]

woow! dats wat i wrote 4 da buuble question. n i totally made dat up! trust me!

hahah well i hope they are right :S i freaked out in the exam though it was hard
i got the energy in solar pannel 22500
and the power around 48 or smthn in 40's
the height i used GPE and i got it as 1.14 or 1.41 smthn forgot
the first question i choosed 1.8 because it was the most frequent reading the question under it was repeated easy the last question i wrote transistor and we need to put in A an resistor or variable resistor in B LDR ( light dependant resistor(
if we use it for temeprature we need to put the thermistor up because it decrease resistiance when hot so the share of voltage decrease hence increaseing volatge that is down and causing the lamp to light ( i didnt write this just an explaination ) and we replace the LDR with a resistor

 

[Hamzeh S]

Didn't have time to do ittt (
How many mark do you think you'll get??
I was expecting to do much better!
For the last question did you write for A: resistor and for B: LED
and for the third A should be replaced by a thermistor and b by a resistorrrr???

ya but the thermistor must be up not down

 

[EpicLol]

the Pistons i wrote that it need mor force because more area and pressure is constant so the force increase
the reason it moved less i wrote it had much more area and that it required more force
the air bubbles in the oil will cause the oil to become compressable hence reducing the efficency or function of the piston

I wrote the first two the same but for the third one, I wrote because the air bubbles will compress therefore all the force will not be reached so the force will not be as high as it should be as usual.....I hope its correct and I hope yr ppl answers are also correct

 

[Hamzeh S]

For this i wrote the base of Y is wider? think its correct?? :S

ya probably you will some marks since wider means more area

 

[IGCSE O/L student]

Didn't have time to do ittt (
How many mark do you think you'll get??
I was expecting to do much better!
For the last question did you write for A: resistor and for B: LED
and for the third A should be replaced by a thermistor and b by a resistorrrr???

da final ans. dats wat i wrote.
da previous one, instead of LED, it shud b LDR

 

[Hamzeh S]

I wrote the first two the same but for the third one, I wrote because the air bubbles will compress therefore all the force will not be reached so the force will not be as high as it should be as usual.....I hope its correct and I hope yr ppl answers are also correct

ya its the same dont worry its right

 

[shalala]

I wrote the first two the same but for the third one, I wrote because the air bubbles will compress therefore all the force will not be reached so the force will not be as high as it should be as usual.....I hope its correct and I hope yr ppl answers are also correct

I wrote the same for the last *HIGHH FIIIVEEE*

 

[EpicLol]

ya but the thermistor must be up not down

wait no......its a resistor and a light sensor.....and then replace the light sensor with a temperature sensor(thermistor).....I put resistor and variable resistor instead of light sensor Im stupid

 

[Hamzeh S]

wait no......its a resistor and a light sensor.....and then replace the light sensor with a temperature sensor(thermistor).....I put resistor and variable resistor instead of light sensor Im stupid

ya ohh :S its ok 2 -3 marks max

 

[shalala]

da final ans. dats wat i wrote.
da previous one, instead of LED, it shud b LDR

oh yes LED ...typo :S

 

[Hamzeh S]

hahah well i hope they are right :S i freaked out in the exam though it was hard
i got the energy in solar pannel 22500
and the power around 48 or smthn in 40's
the height i used GPE and i got it as 1.14 or 1.41 smthn forgot
the first question i choosed 1.8 because it was the most frequent reading the question under it was repeated easy the last question i wrote transistor and we need to put in A an resistor or variable resistor in B LDR ( light dependant resistor(
if we use it for temeprature we need to put the thermistor up because it decrease resistiance when hot so the share of voltage decrease hence increaseing volatge that is down and causing the lamp to light ( i didnt write this just an explaination ) and we replace the LDR with a resistor
and for the effiancy i multiplied 65 % by the answer

 

[EpicLol]

I checked like tonnes of previous Grade thresholds and its usually between 40-49 and higher is an A....so get more than 49 and yr safe....I think....but this year the paper was harder so it might be even lower XD
For paper 1 its like around 29-35 out of 40 for an A which is sorta like wow! I got an exact 35...so I got an A on multiple choice

 

[EpicLol]

Does anyone know for sure how we get an A*? is it like by getting A's in all the 3 parts?

 

[IGCSE O/L student]

I checked like tonnes of previous Grade thresholds and its usually between 40-49 and higher is an A....so get more than 49 and yr safe....I think....but this year the paper was harder so it might be even lower XD
For paper 1 its like around 29-35 out of 40 for an A which is sorta like wow! I got an exact 35...so I got an A on multiple choice

oh, masha allah! congrats!

 

[IGCSE O/L student]

Does anyone know for sure how we get an A*? is it like by getting A's in all the 3 parts?

ummm... i'v got no idea

 

[Hamzeh S]

Does anyone know for sure how we get an A*? is it like by getting A's in all the 3 parts?

no getting medium A's so around 33 or more paper 1 65 and more in paper 3 and paper 6 16 or more just to be on the safe side can be lower though

 

[a71]

wat was the maximum height of the jet?? was that 4.79m?? anyone got this ans??

 

[IGCSE O/L student]

no getting medium A's so around 33 or more paper 1 65 and more in paper 3 and paper 6 16 or more just to be on the safe side can be lower though

wat abt A*

 

[Ibosk8mafia]

Was it me or was the paper HARD???

Just you