Advanced Higher Physics 2017-18
Watch
Announcements
This discussion is closed.
Hi everyone 
Now that the projects will have been collected by the SQA, I though we might need a place to discuss revision and the exam, which will be on 8th May
How is everyone getting on with exam prep? Which areas do you find the toughest?

Now that the projects will have been collected by the SQA, I though we might need a place to discuss revision and the exam, which will be on 8th May

How is everyone getting on with exam prep? Which areas do you find the toughest?
Spoiler:
Show
(Original post by Ethan100)
Hey!
I am doing my project on Young's Modulus and I was wondering if any others here are doing the same?
How is everyone finding the project and what topics are you doing also?
Hey!
I am doing my project on Young's Modulus and I was wondering if any others here are doing the same?
How is everyone finding the project and what topics are you doing also?
(Original post by Canerom)
I am doing mine on Young's Modulus as well, how are you finding it? Mine is due in 2 days :/
I am doing mine on Young's Modulus as well, how are you finding it? Mine is due in 2 days :/
0
Report
#2
Hello everyone,
Hope revision is going well. I'm struggling to understand unit three so that's what I've been focusing on.
Hope revision is going well. I'm struggling to understand unit three so that's what I've been focusing on.
0
Report
#3
Hi everyone!
I can't for the life of me figure this out. Can anyone help?
Two in-phase speakers A and B are emitting a signal of wavelength 1.06 m. A tape recorder is placed on the straight line between the speakers, 2.53 m from speaker A.
Calculate the shortest distance from the tape recorder that speaker B should be placed, to ensure constructive interference where the signal is recorded.
Answer = 0.41 m
I can't for the life of me figure this out. Can anyone help?
Two in-phase speakers A and B are emitting a signal of wavelength 1.06 m. A tape recorder is placed on the straight line between the speakers, 2.53 m from speaker A.
Calculate the shortest distance from the tape recorder that speaker B should be placed, to ensure constructive interference where the signal is recorded.
Answer = 0.41 m
0
Report
#4
(Original post by uzi24)
Hi everyone!
I can't for the life of me figure this out. Can anyone help?
Two in-phase speakers A and B are emitting a signal of wavelength 1.06 m. A tape recorder is placed on the straight line between the speakers, 2.53 m from speaker A.
Calculate the shortest distance from the tape recorder that speaker B should be placed, to ensure constructive interference where the signal is recorded.
Answer = 0.41 m
Hi everyone!
I can't for the life of me figure this out. Can anyone help?
Two in-phase speakers A and B are emitting a signal of wavelength 1.06 m. A tape recorder is placed on the straight line between the speakers, 2.53 m from speaker A.
Calculate the shortest distance from the tape recorder that speaker B should be placed, to ensure constructive interference where the signal is recorded.
Answer = 0.41 m
From A to tape recorder:
2.53/1.06 = 2.386... wavelengths
So at the tape recorder the wave emitted from A is at 0.386... of a wavelength. i.e. there has been 2.386 waves from A to recorder.
So to be constructive, you want the wave from B to be at 0.386... of a wavelength also. So this could be 0.386, 1.386, 2.386 of a wavelength.
It asks for the shortest so :
0.386..*1.06 = 0.41m
1
Report
#5
(Original post by Labrador99)
Hi everyone
Now that the projects will have been collected by the SQA, I though we might need a place to discuss revision and the exam, which will be on 8th May
How is everyone getting on with exam prep? Which areas do you find the toughest?
Hi everyone

Now that the projects will have been collected by the SQA, I though we might need a place to discuss revision and the exam, which will be on 8th May

How is everyone getting on with exam prep? Which areas do you find the toughest?
Spoiler:
Show
Past papers here:- http://mrmackenzie.co.uk/advanced-higher/
(also relationship and curriculum info there)

Last years forum was at
https://www.thestudentroom.co.uk/sho....php?t=4282746
(also by Labrador99)
0
Report
#6
(Original post by Ethan100)
Hello everyone,
Hope revision is going well. I'm struggling to understand unit three so that's what I've been focusing on.
Hello everyone,
Hope revision is going well. I'm struggling to understand unit three so that's what I've been focusing on.
Just fire up any problems your having here please be clear about paper and Q.No's as there was multiple papers in a single year past- please specify revised, newer or older curriculum- even better a snapshot image of the question pasted into the thread!

0
Report
#7
Can someone explain how to do questions that deal with uncertainties? We haven't been taught any of it at all.
0
Report
#8
(Original post by Ethan100)
Can someone explain how to do questions that deal with uncertainties? We haven't been taught any of it at all.
Can someone explain how to do questions that deal with uncertainties? We haven't been taught any of it at all.

I refer you to pages 9 through 21 on the course notes regarding Uncertainties pointed to in this - link.
e.g. Ohms Law?






0
Report
#13
(Original post by hydroxide)
Is Ep=Fr a formula we need to know?
Is Ep=Fr a formula we need to know?

(the force is Coulomb force)
0
Report
#14
(Original post by tomctutor)
Gain in Potential energy is equal to the work done = force x distance,
(the force is Coulomb force)
Gain in Potential energy is equal to the work done = force x distance,
(the force is Coulomb force)
Also, when working out electric field strength, or force due to a field, is the negative sign ever included?
0
Report
#15
(Original post by A12322)
Many thanks for this! Could you possibly give a list of derivations we must know?
Also, when working out electric field strength, or force due to a field, is the negative sign ever included?
Many thanks for this! Could you possibly give a list of derivations we must know?
Also, when working out electric field strength, or force due to a field, is the negative sign ever included?
but it simply works out to Fr in magnitude,
don't worry about negative signs as long as you are aware that the potential from +Q is positive and the field is outwords. (opposite for -Q).
An electric dipole is +Q and -Q pair and obviously the force is one of attraction.
Electric Potential energy

Electric Field intensity(strength)

You dont need to know the fact that the field, as a function

or the potential gradient.
Should add you would be expected to derive the relationship



this is easy since work done is gain in potential energy of charge q

so


0
Report
#17
Im signing off now so just to say good luck tomorrow,
Someone please upload quality images of paper if you can (after the exam concludes- ask the invigilator)
remember - relationship formulae- substitution- work out- answer correct number of sig. figs and SI units.
It would be nice if some of you would spend some time learning to use
scripting here (TSR link)!
Someone please upload quality images of paper if you can (after the exam concludes- ask the invigilator)
remember - relationship formulae- substitution- work out- answer correct number of sig. figs and SI units.
It would be nice if some of you would spend some time learning to use


0
Report
#18
Good luck everyone. I'll be honest I'm not looking forward to tomorrow because unit 3 was kinda rushed by our teacher.
0
All the best for tomorrow everyone- hope it goes well
Make sure you get some rest tonight and just do your best in the morning


1
X
new posts
Back
to top
to top