threshold for physis p42

[saadkhan]

yes, i know, i thought that constantly changing the capacitance from farads to micro farads and back to farads again for calculations was very confusing, had to write every thing down in detail...

 

[abrraza]

what was the uninterrupted length... in the last question?

 

[samy]

@saad..
yea so i messed up totally...
all went gud except this and stupid amplifier...

@abrraza
it wax lyk 70.5ish...somethin like dat

 

[boy2011]

plz any1 tel me hw much marks wil i loose i dint change cm^3 to m^3?wil it b 1 mark?

 

[WellWIshER]

plz any1 tel me hw much marks wil i loose i dint change cm^3 to m^3?wil it b 1 mark?

99% sure max 1 mark!

provided u wrote da equation and the working out

 

[saadkhan]

plz any1 tel me hw much marks wil i loose i dint change cm^3 to m^3?wil it b 1 mark?

99% sure max 1 mark!

provided u wrote da equation and the working out

Won't he get the mark for a correct formula...? :Search:

 

[WellWIshER]

ofc he willl

i meant tht if u havent showed ur working and even da formula u get zero!!!

but if their is working and formula then he will loose 1 mark if he did nt convert cm3 to m3!!

 

[boy2011]

yeah i did evrythng ryt the formula and da wurkng evrythng just i dint cnvrt cm^3 to m^3 nd i av askd 1 teacher too he also said il loose only 1mark eny ways for rplyng....

 

[boy2011]

*thx for rplyng

 

[samy]

could we find capacitance takin values from graph instead of gradient???
would dat give same ans???

 

[WellWIshER]

IT SHOULD
i do tht all da time..just take 2 points

 

[samy]

ok i think so....i just tokk two pointx and found it out...wel i forgot to convert to icro farad
will i get e.c.f mark in the energy part for it?

 

[abrraza]

could we find capacitance takin values from graph instead of gradient???
would dat give same ans???

yup..

 

[WellWIshER]

most definitely

 

[boy2011]

ans was 1800microfarads and enrgy difrence we had to find by using 1/2CV^2-1/2CV^2

 

[zahraahmed]

guyssssssssssssss start preparing for phys 5 its going to be v.v.v.v.tough!!!!!!!!!!

 

[nisurju]

ho can u say so?n which part??