ALL CIE PHYSICS DOUBTS HERE !!!

[$!$RatJumper$!$]

Because at 30m, it has an initial velocity, whereas ur equation assumes initial velocity is 0  (ut=0)

i remember reading it off a book, so i think yeah thats true.

But then by doing the method you mentioned, arent we also assuming that initial velocity for the 30m is zero?

[Deadly_king]

Thank you
so why cant we do this: 10 = 0.5 * 9.81 * t²?
and so the ratio of the two gives the speed of them?

You cannot use this equation since you'll be finding the time taken to cover the first 10m of the fall, which is not the required answer

TJ-56 described the appropriate method.

Ok Alpha.........am gonna go rest a bit now.

Good luck for the exams tomorrow guys.

[$!$RatJumper$!$]

You cannot use this equation since you'll be finding the time taken to cover the first 10m of the fall, which is not the required answer

TJ-56 described the appropriate method.

Ok Alpha.........am gonna go rest a bit now.

Good luck for the exams tomorrow guys.

OK yeah i see how he did it it makes sense thankx

[$!$RatJumper$!$]

W05 Q 24 (URGENT please)

W06 Q25

S07 Q23

[TJ-56]

I need help with the following pls

W06 Q25
S06  Q9 & Q33
S07 Q23
W07 Q35
S08 Q6 & Q12
W09 P11 Q17 Why is it C and not D

Sorry for all the questions but these are all i have, thanx for any help, rly appreciated

[TJ-56]

W05 Q 24 (URGENT please)

W06 Q25

S07 Q23

W05 Q 24
Frequency P = 1/T = 1/ t²₀
So I is proportional to A²/T²
I₀ / I(new) = ( x²₀/t²₀ ) / ( (2x)²₀/(2t)²₀ )
Simplifying would give I0, since both the time T and amplitudes are doubled , and since they are squared, they cancel each other out, and its back to the original so B

W06 Q25
I dont know it either, sorry

S07 Q23
Have doubts about that too

[$!$RatJumper$!$]

I need help with the following pls

W06 Q25
S06  Q9 & Q33
S07 Q23
W07 Q35
S08 Q6 & Q12
W09 P11 Q17 Why is it C and not D

Sorry for all the questions but these are all i have, thanx for any help, rly appreciated

I need help on these too Someone?

[TJ-56]

I need help on these too Someone?

Those are rly important, some1 help

and did u understand q24 RatJumper?

[Dania]

Completely lost on this one!

[$!$RatJumper$!$]

Those are rly important, some1 help

and did u understand q24 RatJumper?

i did thank you buddy

[$!$RatJumper$!$]

S03 Q22 :S

[TJ-56]

S03 Q22 :S

Think of it this way: if it were just 1 spring at the beginning, the extension is 3x, since they are 3, the extension is x
1 is removed, so now its 3x / 2 , which is 1.5x
The load is doubled, so 2 * 1.5x
Which is 3x, response D.
Hope that was clear, i understood it that way

[$!$RatJumper$!$]

Thankx

[Dania]

Anyone?
The answer is B.

[TJ-56]

Anyone?
The answer is B.

Energy= mgh
The distance is halved
And the mass is also halved, because half move into the other vessel
so mgh/4