Physics 9702 /22

[Yusuf Iqbal]

good morning guys
for the electricity part, i got the resistance X = 3.11
& The max height = 2.75 m
so is my ans are correct?

How did u get 2.75

 

[Yousif Ahmed]

How did u get 2.75

i used this eqn
(vsintheta)2/2g

 

[Yousif Ahmed]

(vsintheta)SQUARE/2g

 

[PlutoHuman]

(vsintheta)SQUARE/2g

wasnt the 'v' shown in the graph already the vertical component??????????????/

 

[ferdous12]

wasnt the 'v' shown in the graph already the vertical component??????????????/

nope that was the resultant velocity. and guys dont discuss, concentrate on ur paper 1 now , thats worth like 31 % .

 

[Bba321]

What about the ratio for power?

 

[abdulkhan]

The graph represented vertical component of velocity and resultant vel in projectile motion is never zero. the max height was 1.80m

 

[Ahmedlool]

did you guys get for the longitudinal and transverse wave similarities that they can both be diffracted

 

[PlutoHuman]

did you guys get for the longitudinal and transverse wave similarities that they can both be diffracted

I wrote that they both can transfer energy from one point to another.....
Let's just forget about it! Inshallah the grade threshold will be low! This paper was like Oct/Nov 2012 and 2013 and both of them had marks between 30-35 for an 'a'! Allah knows best! All the best for p1!

 

[Ahmedlool]

but i checked and they both can be diffracted so am i right?

 

[Feroz Tahir]

but i checked and they both can be diffracted so am i right?

Y
Yes, its correct.

 

[Feroz Tahir]

Paper was easy tho, got wrong resistance and therefore i'll lose marks in Electricity, around 5. Qno1, part 2 went wrong, and the angle in Vectors went wrong, and along that few other silly mistakes, Maximum 10 marks. In Shaa Allah. Expecting A.

 

[frostedscarlet]

Resistance 4?? Are you sure?? Did you take effective resistance of X in ciruit2?

 

[PlutoHuman]

Paper was easy tho, got wrong resistance and therefore i'll lose marks in Electricity, around 5. Qno1, part 2 went wrong, and the angle in Vectors went wrong, and along that few other silly mistakes, Maximum 10 marks. In Shaa Allah. Expecting A.

Resistance 4?? Are you sure?? Did you take effective resistance of X in ciruit2?

What did you guys get for the resistance?

 

[Yusuf Iqbal]

The graph represented vertical component of velocity and resultant vel in projectile motion is never zero. the max height was 1.80m

Exactly!!!!! Yes that's what I did....and I m quite sure that it's correct

 

[Yusuf Iqbal]

Similar: both carry energy from one place to another
Diff: longitudinal wave vibrate parallel to the direction of wave velocity

 

[Biocalife]

Yes max heght 1.83 and k.e and p.e 11.7 J. For resistance ive got 6 used proportionality and kirchoff's law to check but not sure its the right answer though... Last question did you get power=70 W ?

 

[Feroz Tahir]

What did you guys get for the resistance?

I didn't got that 4, but yes the answer is 4 as many of the students said it was 4.

 

[Feroz Tahir]

Yes max heght 1.83 and k.e and p.e 11.7 J. For resistance ive got 6 used proportionality and kirchoff's law to check but not sure its the right answer though... Last question did you get power=70 W ?

No, it was different. How'd you do?
We had to multiply the number with MeV, then with the number of atoms Idk how many and then divide it by 3600, because it said in a day. Answer was in exponent 4.13 something.

 

[PlutoHuman]

I got the height as 1.77m and my PE and KE both were 11.3 ( 3 s.f.)
But i guess there will be a range for the correct answer because the speed was to be read of from the graph....