how was phy P22??

[Abdulrab]

I DONT THINK R1 WAS INCLUDED AS THERE WAS NO I for it !!

 

[Emily793]

@ ying27kia
you use workdone= forces x distance which is s
and v2=u2 + 2as
then force = mass x acc
acc = force/mass
replace in v2= u2+ 2(f/m)s
rearranging... 2(f/m)s = v2- U2
fs = 1/2 (v2- u2)m
thus work done is 1/2 m (v2) hence the k.E eqt

 

[reh2300]

they said that from the maximum displacement to the minimum dislplacement (i.e from the antinode to the node) the distance covered is 6.7 cm... 0.067m
hence the wavelength is (2 x 0.067).... frequency is 2500 Hz... so the speed will be 335 m.s-1

aand yes the answer for the first part of Kirchoff's Law is I2 = I1 + I3

yup i got the same results for the two! but i m not sure about the other 2 kirchoff's law equations :S

 

[reh2300]

wat were the graphs??
and how does alpha particle lose energy?

Alpha particles have a high ionization power and they lose energy by ionization.

yes i wrote that! but it was kind of a guess!

 

[Dummy36]

man im soooo screwed.... the first graph i did it correct then cancelled it....
im soooo down.....

 

[nerdybookworm]

dayum..my frequency was 2.5..n for wavelength i di lamda/2 at frst n thn sme stpid thingy i did i did by lamda/4.......praay for me fellows...it wansnt gud for mee

 

[nerdybookworm]

they said that from the maximum displacement to the minimum dislplacement (i.e from the antinode to the node) the distance covered is 6.7 cm... 0.067m
hence the wavelength is (2 x 0.067).... frequency is 2500 Hz... so the speed will be 335 m.s-1

aand yes the answer for the first part of Kirchoff's Law is I2 = I1 + I3

yup i got the same results for the two! but i m not sure about the other 2 kirchoff's law equations :S

the wavelenght i did a big mistake ..frst i did rite n thn crossed..:-/
n kirchoff law's my ans is same as urs

 

[shressubha]

there are 4 segments in the graph
0 m/s to 18 m/s.
Constant speed at 18 m/s.
Decreases to 0 m/s till 12.5
becomes constant again at negative 12.5 till 100seconds

 

[Mia4005]

The paper was pretty okay,
i just got nervous :S
sigh i thnk a lost around 10 marks or so..
what do u thnk the average threshold is?
im so worried

 

[Adham-amr]

it was really easy..i expect the GT would be like 40-45 for an A

 

[Mia4005]

it was really easy..i expect the GT would be like 40-45 for an A

do u kno how much marks was it for the wave question and the kirchoffs law?

 

[reh2300]

how much mark was for the table in question 7?

 

[Adham-amr]

how much mark was for the table in question 7?

3 marks

 

[Optimass25]

Guys I have given the charge of @ particles and beta particles in coulomb charge values ....
Will I get any mark for that...??? :bad:

 

[iloveme22]

anyone remember the answer for the electric part and speed of wave?
I got 168 ms-1
for the electric part is it I1+I3=I2 ?

speed for the wave for 335...u had to multiply 6.67 with 2 to get the full wave length and yeah i1 +i2=i3 is right =)

 

[Abdulrab]

guys if i lose in max 12 to 13 marks !! will i have a chance to get an A grade in paper 2 please help im really worried about it ?? please reply if anyone knows someting ???

 

[Mia4005]

yes, IF the GT is 40 or 45
most prolly it shud be..
dont worry, try scoring p1 if your still unsatisfied.
You can get an A inshaALLAH .

 

[Abdulrab]

thnku somuch brother for giving me hope !!

 

[Mia4005]

im a gurl XD

 

[Abdulrab]

anyways thanks sweetie in which college do u study ??