Physic paper 1 2011 answers

[mido4help]

The work and useful power: I had choose don't change and increase
The remaining ice: I had choose 2 Celicus
For the barometer: the answer is same pressure
For the three lamps parallel: on, off, on
For capicator; The answer is to store energy and used in time delays
About safety: The answer is fuse and circuit breaker
The length of feather is 19 mm
The ice is kept at bottom of ice box
For the transformer the primary coil is on left side

 

[anonymous123]

The temperature of the remaining ice was 0. Ice at 2 Celsius??
Are you sure these answers are correct?

 

[Outofideaz]

are these answers perfectly correct?
the first one i did both increase
and for the ice did on the top .. caz in refridgerators the cooling thing is on top ... as hot air rises

 

[haochen]

1) dont remember
2) its 0'C coz ice is always at 0'C if it went to 2'C, there wont be ice.
3) same pressure at X and Y not atm. pressure (think u know )
4) dont remember but i wrote 1 light coz there is a cut in the circuit
5) yeah ur right but i wrote store energy and P.D.
6) yeah
7) dont remember but i think ur right
8) no !!! ice is keep at the top because hot air rises and cold air go down so all hot air can be cooled
9) no !!! primary coil is on the right side coz it is step down transformer so the primary turn so be more

hope u got it

 

[Keeemoman]

The work and useful power: I had choose don't change and increase
The remaining ice: I had choose 2 Celicus
For the barometer: the answer is same pressure
For the three lamps parallel: on, off, on
For capicator; The answer is to store energy and used in time delays
About safety: The answer is fuse and circuit breaker
The length of feather is 19 mm
The ice is kept at bottom of ice box
For the transformer the primary coil is on left side

This is really fuuny how can u be the marking scheme

 

[anonymous123]

The ice should be kept at the bottom....And I dont think there was an option to keep it at the top

 

[haochen]

there was
1) one at the top and bottom
2) both bottom
3)both top
4)on the side (i think)

hope u remember

 

[anonymous123]

Ok I do but that doesn't make your answer right

 

[AStarHunter]

actually, i did the ice at the top too, just like haochen, since the air cools, becomes more dense and falls and cools the food

 

[anonymous123]

Ok I am wrong

 

[haochen]

dont be sad
cheer up

 

[anonymous123]

Yea you can say that :evil: =@

 

[AStarHunter]

hey, chill out mate, it`s just one tiny mistake. Hopefully, u got the rest correct

 

[screwcie]

Yea the ice pack on top ... got the temp. of ice wrong though :S