You are Here: Home >< Physics

# OCR Gateway Physics P4P5P6 - 18/06/13 Watch

1. (Original post by 'THE MASTER')
So then who's the smartest here?
In what?
2. Any predictions for the six marker?
3. I attached some practice six markers back here if anyone's interested
(Original post by BP_Tranquility)
I've attached some six markers.

The P5 one looks to be the most difficult out of the three!

P4- Attachment 227626
P5- Attachment 227627
P6- Attachment 227629

Posted from TSR Mobile
4. (Original post by Knowing)
Because he got it wrong (no offence )

1/3 + 1/4 + 1/5 = 0.783... (he put 1/0.783, which is wrong)
And then you find the inverse of 0.738, giving you 1/0.783 = 1.28

(Original post by BP_Tranquility)
Because we have 1/total resistance when we add up the other fractions so we have to find the inverse by raising it to the power of -1 , to get total resistance/1 which is the value we want...It's the same as finding the reciprocal
oh yeah..i remember know .....

i did the Physics spec paper
Spoiler:
Show
72/85 with very cruel marking ...and 5 marks loss in Section D ...
5. Does a motor create AC or DC?
6. (Original post by 'THE MASTER')
So then who's the smartest here?
In what ... L'evil Fishzzzz words...

Ryan
Does a motor create AC or DC?
A motor uses DC- this is why it needs a commutator to switch the direction of the current every half turn and allow it to continue spinning
8. (Original post by BP_Tranquility)
I attached some practice six markers back here if anyone's interested
Does a motor create AC or DC?
A motor creates kinetic energy
10. (Original post by BP_Tranquility)
A motor uses DC- this is why it needs a commutator to switch the direction of the current every half turn and allow it to continue spinning
Yeah thanks I got it now, CGP only says that in an indirect way
11. (Original post by Knowing)
A motor creates kinetic energy
Shh ant
12. In optics, why are real images inverted?
How do Diode depletion layers work?
What is meant by a 'smooth' voltage output?
13. (Original post by Knowing)
A motor creates kinetic energy
Energy can't be created or destroyed

Posted from TSR Mobile
14. (Original post by BP_Tranquility)
Energy can't be created or destroyed

Posted from TSR Mobile
Dang it! You know what I mean transfers electrical energy into kinetic
15. (Original post by L'Evil Fish)
-P4-

-P5-

-P6-

Posted from TSR Mobile
16. Ok so o need to go ober diodes and rectification....although I dnt think it will cone up ... Maybe a 2/3 mark question

Posted from TSR Mobile
17. (Original post by ryanb97)
Ok so o need to go ober diodes and rectification....although I dntthibk ot will cone up ... Maybe a 2/3 mark question

Posted from TSR Mobile
I don't even understand it. Also, are you drunk?
18. (Original post by BP_Tranquility)
-P4-

-P5-

-P6-

Posted from TSR Mobile
The answers to P5 don't correspond to the question
19. (Original post by Knowing)
The answers to P5 don't correspond to the question
They do
-Polarisation can only happen when light acts as a wave
-When you have two slits, then this evidences that light acts as a wave (an interference pattern can only caused by a wave)
-Therefore, you can only find the path difference using the wavelength when light acts as a wave (you find the path difference to see if there is constructive and destructive interference).
-When light acts as a wave, then it slows down in a prism. If it acted like a particle, this effect wouldn't happen.

Hopefully, they won't ask a question like that in the exam
20. (Original post by BP_Tranquility)
They do
-Polarisation can only happen when light acts as a wave
-When you have two slits, then this evidences that light acts as a wave (an interference pattern can only caused by a wave)
-Therefore, you can only find the path difference using the wavelength when light acts as a wave (you find the path difference to see if there is constructive and destructive interference).
-When light acts as a wave, then it slows down in a prism. If it acted like a particle, this effect wouldn't happen.

Hopefully, they won't ask a question like that in the exam
That's ridiculous, I sure hope they don't ask that

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: June 18, 2014
Today on TSR

### Am I pregnant?

...or just paranoid?

### A robot wrote Harry Potter?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.