P1 CIE physics doubts

[dodo]

nid404 thx for the help and am really sorry for asking soo many times but the question so hard thxxxxxxxxxxxxxxxxxxxxxxxxxxx 

[nid404]

nid404 thx for the help and am really sorry for asking soo many times but the question so hard thxxxxxxxxxxxxxxxxxxxxxxxxxxx 

no problem 

[sweetie]

9, B cos it is the biggest negative gradient
33. Across the top the voltage splits in ration 1:2 ie 4V:8V
but accross the bottom it is 8:V:4V
so Potential differenceD is 4V

thanx
but for Q9 isnt the gradient at B zero???

[astarmathsandphysics]

gadient zero = max
at B graph is zero but gradient is maximum negative cos graph is going down

[sweetie]

i didnt get it, can u plz show me how??

[astarmathsandphysics]

At bottom of motion v=zero but acceleration is positive sp graident is positive. D
I had to read this question several time - I wasnt concetrating

[sweetie]

Thank You

i cudnt understand these Q's in may07 , help plz!!!!
Q40, 37,33,29,23,20 and 18

thanx in advance

[~ A.F ~]

Thank You

i cudnt understand these Q's in may07 , help plz!!!!
Q40, 37,33,29,23,20 and 18

thanx in advance

I'm on it

[~ A.F ~]

Thank You

i cudnt understand these Q's in may07 , help plz!!!!
Q40, 37,33,29,23,20 and 18

thanx in advance

Q18: B---> the bottom curve is the one for unloading..and so area under curve equals energy recoverd..the lop's area equals to heat transformation

Q.20: B---> W acts downwards on vertical bar..and so tension at X..then just like the concrete and steel beam, when u put a load at the top, tension acts at the top, compression at the bottom

Q. 23: check this thread..5th page..my long post  https://studentforums.biz/index.php/topic,6664.60.html

40: same as Q23

[nid404]

hey you A.F, you rock  + rep

[sweetie]

Thank You soooo much A.F
+rep

cud u also xplain the rest of the questions?/

[~ A.F ~]

my bad

Q.33: u must find V₁ and V₂

V1: same resistence..therefore V1 across PS = 2/2= 1.0 V

V2: 3 ohms: 2 ohms: 5ohms
      x voltage:       : 2

do ratio..now x=3x2/5= 1.2

therefore V1-V2= -0.2 V----> answer is C

Q 37: Same resistors, same length, same material ---> C

Q29: Its exactly like a projectile..constant speed as its in vaccum..no rsistence, and acceleration upwards as its negatively charged..attracted upwaqrds towards the +ve plate

got that? 

[~ A.F ~]

and Thanks 4 the + rep.

[sweetie]

for Q33, why did u take the ratio's???
and Q37> in resistor Q arent the wires in parallel , so the total resistance should be x/7?

[nid404]

Q33...current divides on the basis of the ratio of the resistance...

Q37 srry I can't explain