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IGCSE Physics 22/42

How were physics papers 22 and 42?

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Really bad :frown:
Original post by LuvDaStudiezz
How were physics papers 22 and 42?


What were the answers for momentum and magnetization and demagnetization? Overall did everybody's go bad? Predicted threshold???????
I felt like I did OK but people kept saying they got different answers which ruined my confidence lol :/
Reply 4
hard..... how do you calculate impulse from the car question @@
Reply 5
What did people write for the Electricity question on power 100 watts.
Original post by lixiaolu
What did people write for the Electricity question on power 100 watts.


current was 4.18A
Original post by chemistry igcse
current was 4.18A


I thought it was 8.3A

BC
(edited 7 years ago)
I got 4.18A as well
Reply 9
Original post by LuvDaStudiezz
I thought it was 8.3A

BC


I got 8.3A
Reply 10
what was the impulse? 3000Ns for me
Reply 11
8.3 A
Reply 12
Original post by sheshenk
what was the impulse? 3000Ns for me


Yeah you are right
Original post by lixiaolu
Yeah you are right


I wrote 3000Ns but many ppl wrote 27000 as impulse
Original post by Crossover
I wrote 3000Ns but many ppl wrote 27000 as impulse

yes i wrote 3000 Ns as well. the sad part is that this question's answer changes the answer for the next question as well. Lots of people say its 27000 Ns
what was your answer for the final velocity in the momentum question. 2.72 m/s or 0.5 m/s?
Original post by dianciesylveon
I got 4.18A as well


its 8.33 A
Original post by anushgaur
yes i wrote 3000 Ns as well. the sad part is that this question's answer changes the answer for the next question as well. Lots of people say its 27000 Ns

So what is the right answer?!
Original post by Crossover
So what is the right answer?!


there's still debates going on between those two answers. i guess we'll only find out when the mark scheme is released. Hopefully its 3000 Ns
Original post by Crossover
What were the answers for momentum and magnetization and demagnetization? Overall did everybody's go bad? Predicted threshold???????


for magnetizing, u run direct current through the circuit
for demagnetizing, u run alternating current through the circuit

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