Combined Physics (5116) Aftermath 2008
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actually satellite tv can function both with radio waves and microwaves
it is just that the method used for broadcasting is different from normal TVs
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Originally posted by eagle:
actually satellite tv can function both with radio waves and microwaves
it is just that the method used for broadcasting is different from normal TVs
so how.? cannot be that they accept both answer.only possibility is when they set wrongly.
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why cannot accept both answers
there are still wrong answers mah... i.e. if someone go and put infra red or UV, confirm wrong
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So they may accept both radiowaves and microwaves? I wrote the former... :(
And for the circuit question I made a really careless mistake and wrote P = IV then I = V/P so I got 0.5A instead of 2A. Will I still get marks for that? Because of this, I also got my combined resistance question wrong. But method correct for that.
That's... what, 5 or 6 marks gone?
But I think the paper was okay.
I'm so upset over my careless mistake sigh :'(
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Originally posted by Occam's Razor:
6.Heating curve (draw), then recall QDang, I didn't draw a curve... Haha, I drew straight lines instead. Two marks... gone.
Wrote radiowaves instead of microwaves, another two marks gone.
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Originally posted by Theguiltshow:
So they may accept both radiowaves and microwaves? I wrote the former... :(
And for the circuit question I made a really careless mistake and wrote P = IV then I = V/P so I got 0.5A instead of 2A. Will I still get marks for that? Because of this, I also got my combined resistance question wrong. But method correct for that.
That's... what, 5 or 6 marks gone?
But I think the paper was okay.
I'm so upset over my careless mistake sigh :'(
That's what happens when the paper is easy. No longer is it 'survival of the fittest'.
ECF perhaps?
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It's the survival of the most careful haha. Sadly I am not one of those. Oh well.
The radio waves question is 2 marks?? O_O For the heating curve is it decreasing gradient first then straight line (change of state = same temperature) then increasing gradient? (all curves except straight line)
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i wrote 110g instead of 0.11kg die lar
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HAHAHAHA so easy! :DDD
the only qn i dunno is the vector one \:
i put 5N,dunno correct or not
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Originally posted by MyPillowTalks:
i wrote 110g instead of 0.11kg die lar
same lol,but my teacher say maybe can :D
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Originally posted by Maith:
HAHAHAHA so easy! :DDD
the only qn i dunno is the vector one \:
i put 5N,dunno correct or not
5N is correct.
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My focal length put 2 cm sia... hope can get correct.
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Originally posted by MyPillowTalks:
i wrote 110g instead of 0.11kg die lar
as long as they did not state that it must be in SI units, it is correct
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this is how my graph looks like...
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Originally posted by Vendettus:
5N is correct.
serious? hahaha i use pythagoras find sia! :D
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Originally posted by MyNameisNas:
this is how my graph looks like...
Honestly, that looks weird. I don't know if it's correct but there's definitely something weird about it.
I think the curve from -2 to 1 should be at the 1 to 4 part, and vice versa.
By the way, the question was to draw a graph for the ice pack, not for the solid that melts at 1 degree celsius. Therefore, even if all the curvatures are right, you were drawing the graph for the wrong object.
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Originally posted by Maith:
serious? hahaha i use pythagoras find sia! :D
You're allowed to use Pythagoras' theorem.
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This is what my graph looks like... Different from yours :'( Dang.
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haha.. guess im wrong than!...
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Ah, Theguiltshow's graph looks much pleasing.
No use brooding over it, what's past had passed. I myself haven't done fantastically well either. Truth be told, I haven't performed even half of what my potential allows. By the way, I'm certain I've got my melting graph wrong. Unless the markers are so drunk, they could not differentiate a straight line from a curve, I have no doubt I'm wrong.
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Originally posted by MyNameisNas:
haha.. guess im wrong than!...
No matter as long as you score well for the other aspects.
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For The Focal Length Question, I notice that many got 1.8cm, so got 1.7cm and some got 1.9cm. So do you think it is possible that they will accept 1.8cm +-0.1?
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Wah.. my melting curve = MynameisNas' curve part 1 + straight line + Theguiltshow's curve part 3
Sect B qn 2
Reasons why electric heater at bottom is not as effective? Anyone know this one? I stated that as the heated water rises it may lose heat by conduction to the tank walls.. hope it makes sense enough
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I drew theguiltshow's graph but i checked the TB and their graph is
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Anyway this paper, together with chem, is quite easy lar. Reason being is that to pull up the marks of Science, since the practical is quite hard (that's how i think) :P