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OCR Gateway Physics P4P5P6 - 18/06/13

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So what did everyone get for the Vector and Scalar question?
What I got:

Vectors: Velocity, Momentum, Weight
Scalars: Speed, Mass

Original post by BP_Tranquility

I did the same as you :biggrin:

I wasn't too sure on momentum but then I thought about how momentum can be positive or negative, which indicated direction, so I then concluded it was a vector (wasn't completely certain though :tongue:

)...

Yay I chose those too :smile:

Reply 761

Mutleybm1996

Original post by andersson

Yay I chose those too :smile:

Weight is a vector right? Phew :smile:

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Reply 762

Elcor

Original post by benwalters1996

Weight is a vector right? Phew :smile:

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Yeah it's a force which has a direction too - so vector :smile:

Reply 763

ryanb97

Original post by BP_Tranquility

That's fairly impressive doing 6 AS levels :wink:

No idea which modules I'll be doing :tongue:

...Is it possible to do (apart from the mandatory modules) to do only mechanics as your options, or do you have to do statistics and decision modules as well? :smile:

Nope,,you can do purely mechanics modules -- but if you are doing FM with only Mechanics modules, you will struggle when you get to M5 :biggrin:

Reply 764

BP_Tranquility

Original post by ryanb97

Nope,,you can do purely mechanics modules -- but if you are doing FM with only Mechanics modules, you will struggle when you get to M5 :biggrin:

Brilliant- might just do mechanics then :biggrin:

What's M5 about? :smile:

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Reply 765

ryanb97

Original post by BP_Tranquility

Brilliant- might just do mechanics then :biggrin:

What's M5 about? :smile:

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Im not sure what its about...but i have heard from several people that it is by far the hardest module....in terms of content and understanding ..

Ryan

Reply 766

HR1996

Ehhh so confused,was there a calculation question on transformers? :confused:

Reply 767

sassqueen

Original post by Knowing

What was the missing circuit thing?

It was 180m if I remember correctly

The missing circuit was a diode because it only allowed current in one direction

Reply 768

sassqueen

Original post by HR1996

Ehhh so confused,was there a calculation question on transformers? :confused:

It was that power is the same for output and input. So it was the VI=VI equation at the front.

Reply 769

HR1996

Original post by sassqueen

It was that power is the same for output and input. So it was the VI=VI equation at the front.

thanks but i honestly don't remember this :confused:

was it part of the 6 marker?

Reply 770

Knowing

Original post by HR1996

thanks but i honestly don't remember this :confused:

was it part of the 6 marker?

Yeah it was: it asked you to use a calculation in the answer. I was going to use the coil equation, but there was no info given on the primary coil turns - but it did give the current. So I used the equation VpIp=VsIs to work out the current at the second coil

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Reply 771

HR1996

Original post by Knowing

how many marks do u think i will lose bcz of this? :mad:

Reply 772

L'Evil Fish

Original post by Knowing

230/5 = Primary/z

So Primary coils over 46 = turns on second coil

Reply 773

Knowing

Original post by L'Evil Fish

230/5 = Primary/z

So Primary coils over 46 = turns on second coil

If that was what they wanted you to do, they wouldn't have given you the current through the primary coil (although this calculation may also be accepted)

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Reply 774

L'Evil Fish

Original post by Knowing

If that was what they wanted you to do, they wouldn't have given you the current through the primary coil (although this calculation may also be accepted)

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I did the current as well

Reply 775

BP_Tranquility

Original post by ryanb97

Im not sure what its about...but i have heard from several people that it is by far the hardest module....in terms of content and understanding ..

Ryan

Just looked through the specification now and M5 is all about inertia, kinetic energy, angular momentum, pendulum, motion of particles with varying mass, vectors etc. :smile:

If it's that difficult, I might have to switch to statistics...But to do a statistics module in further maths, you have to have done S1 I assume in normal maths, so instead of doing Mechanics 1 to 4, I'll only be able to do Mechanics 1 to 3, and Statistics 1 and 2...

Might have confused myself there, oh well, only time will tell :cool:

Reply 776

Mutleybm1996

Original post by BP_Tranquility

Just looked through the specification now and M5 is all about inertia, kinetic energy, angular momentum, pendulum, motion of particles with varying mass, vectors etc. :smile:

In maths there's 4 core units and 2 additional ones?
Isn't it the same in further? In that case you have 5...not 4..additional units?

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Reply 777

Red Fox

Original post by benwalters1996

In maths there's 4 core units and 2 additional ones?
Isn't it the same in further? In that case you have 5...not 4..additional units?

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There's only one compulsory module in further maths (FP1).

Reply 778

Elcor

Original post by Knowing

If that was what they wanted you to do, they wouldn't have given you the current through the primary coil (although this calculation may also be accepted)

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