How did the physics 22 paper go?

[asadalam]

What was the answer to the first part of electricity question?Where we had to find the current in the circuit >? Was it 6.6666 something ?

5.33x10-4

 

[zainabr17]

21 people voted for 50 to 60 !?

 

[iwillrise]

21 people voted for 50 to 60 !?

I know, it's got be impossible. Thresholds for Physics, no matter how easy, is never higher than 42-45

 

[rft_101]

5.33x10-4

what was the resistance?

 

[asadalam]

what was the resistance?

4500 ohm

 

[sdsdwwwwwwwwwwwwwww]

no that's not correct. the question very clearly mentioned "constant acceleration" hence you had to use the SUVAT equations

If its constant acceleration, then gradeint of speed time graph is CONSTANT! meaning you can use area under graph! Why couldnt you?

 

[sdsdwwwwwwwwwwwwwww]

4500 ohm

which papper is this? Is it the one with the resisistor with 4 ohms of resistance? and the one with an electri cfield question at end of papaper?

I remeber there was an electricty question, I used kirchoff seocnd law and got resisitnace to be smaller

 

[asadalam]

If its constant acceleration, then gradeint of speed time graph is CONSTANT! meaning you can use area under graph! Why couldnt you?

which papper is this? Is it the one with the resisistor with 4 ohms of resistance? and the one with an electri cfield question at end of papaper?

I remeber there was an electricty question, I used kirchoff seocnd law and got resisitnace to be smaller

Are you sure you gave 22 and not 21?

 

[awesomaholic101]

If its constant acceleration, then gradeint of speed time graph is CONSTANT! meaning you can use area under graph! Why couldnt you?

Because it was a displacement-time graph... Not speed-time

 

[Hassan Mirza Aziz]

What was the the form of energy given out in the last question?

 

[awesomaholic101]

What was the the form of energy given out in the last question?

i wrote kinetic energy ... not sure thou ...

 

[iwillrise]

What was the the form of energy given out in the last question?

I wrote gamma rays .... anyone know what the correct answer is?

 

[Aly Emran]

i wrote kinetic energy ... not sure thou ...

I wrote gamma rays .... anyone know what the correct answer is?

What was the the form of energy given out in the last question?

Kinetic energy/heat energy/thermal energy/Gamma rays/gamma radiations all are acceptable!

 

[Ahmed Aqdam]

http://maxpapers.com/syllabus-materials/physics-9702-a-level/attachment/9702_w14_qp_22/
Q7 a (ii) is a very similar question and the answer in mark scheme is

 

[Safiya Ramzy]

http://maxpapers.com/syllabus-materials/physics-9702-a-level/attachment/9702_w14_qp_22/
Q7 a (ii) is a very similar question and the answer in mark scheme isView attachment 53842

No that question is different. It says to state the energy of alpha particles specifically. However the question in the exam was to state the energy released from the reaction. So if you wrote Kinetic energy/Thermal energy/Gamma rays they are all right :')

 

[nehaoscar]

Yeah paper practice helps a lot

Yup it reached highest point and zero speed at 1.25 s

I used the time of highest point as 1.3 instead of 1.25.... think they'll give marks?

 

[Safiya Ramzy]

I used the time of highest point as 1.3 instead of 1.25.... think they'll give marks?

I think they will. Cuz every marking scheme has +/- 0.05 . So don't worry :')

 

[asadalam]

I used the time of highest point as 1.3 instead of 1.25.... think they'll give marks?

I think they will. Cuz every marking scheme has +/- 0.05 . So don't worry :')

1 mark will be cut,then the error carried forward.The +/- thing is for plotting of graphs,not reading off one.Our reading has to be accurate.

 

[Ahmed Aqdam]

No that question is different. It says to state the energy of alpha particles specifically. However the question in the exam was to state the energy released from the reaction. So if you wrote Kinetic energy/Thermal energy/Gamma rays they are all right :')

OK! I don't remember the exact question now. I just meant that kinetic is the answer to this and other similar questions so that won't be wrong.

 

[M.Fazy]

What was the answer to how stationary waves can be formed and what role does detector plays in it ?

Aaaand, Change in momentum was ZERO right ? It rebounded with same speed so no change in momentum.