physics paper 1,2 ........can we discuus da papper nw?

[Fallen316]

how was the scale used for the extension Q1(b)?

first measure the inital length of spring.
then take the measure after the mass was hung.
extension = final - inital

 

[bikermicefrmars]

Good Good .

 

[beeloooo]

Q9's last part was 3.2 !!!!!

The resistors were in parallel and 2.5

So, 1/2.5 + 1/2.5 = 4/5, which reversed makes total resistance 1.25.

The current was 1.6 and power loss is equal to current squared multiplied into resistance

1.6x1.6x1.25 : 3.2W

ain't u mixing up q.8 and q.9 ???????

 

[beeloooo]

first measure the inital length of spring.
then take the measure after the mass was hung.
extension = final - inital

hey can u tell me q.9 last parts answers ???

 

[bikermicefrmars]

What is friction? It is a force that opposes motion....caused by roughness of a surface...measured in newtons.? Is it good enough?

 

[pakisatan123]

any one did ques 1 of section b

 

[Fallen316]

hey can u tell me q.9 last parts answers ???

my answers were:
second last = 380 something something
last = 12.8

 

[Fallen316]

What is friction? It is a force that opposes motion....caused by roughness of a surface...measured in newtons.? Is it good enough?

more than good;

 

[beeloooo]

my answers were:
second last = 380 something something
last = 12.8

pheww !! THANK God !! it was 384 W !!

 

[Fallen316]

pheww !! THANK God !! it was 384 W !!

its the last one im worried about
what was your answr for last part. 12.8 ?

 

[beeloooo]

its the last one im worried about
what was your answr for last part. 12.8 ?

exactly 12.8 W !!

 

[Doosh Bag]

Ok, help me here :

Q1) Mass, extension one.
Q2) Car's acceleration and stuff
Q3) House heating
Q4) angle of incidence and 32. something as angle of refraction one
Q5) wave motion and stuff
.
.
Q8) Wire and stuff
Q9) transformer wala
Q10) Gamme rays and Beta rays and stuff

What were question 6 and 7 about ?!?!?

Any1 ????

 

[Fallen316]

exactly 12.8 W !!

BUT , aren't those resistors in parallel ?

 

[pakisatan123]

What is friction? It is a force that opposes motion....caused by roughness of a surface...measured in newtons.? Is it good enough?

i wrote friction is a force opposing body in motion and it acts in opposite direction is it ok

 

[waztaz123]

There was an MCQ whose answer was 1010mm.

 

[waztaz123]

What's the use of optic fibres!

 

[waztaz123]

Let's study for Add Maths and Chemistry....now.

 

[Fallen316]

There was an MCQ whose answer was 1010mm.

yes , it was

What's the use of optic fibres!

they are cheap as well as light.

 

[xxvvyy]

Series, i guess!

it was in series, even if it was not the the current was AC...so anyway the resistance should be taken on series Add it

 

[xxvvyy]

BUT , aren't those resistors in parallel ?

no