AQA Physics A Unit 2 5th June 2009 [New Spec]

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The test was fine.

furry747

I have a feeling it was 20.

what was the calculation for it? distnace divided by speed? 160 divided by 16?

MarcusTheEskimo

Izzwizz0

what was the calculation for it? distnace divided by speed? 160 divided by 16?

If I remember correctly, S=1/2(u+v)t

You could use that one because the question said to assume uniform a.

So 160=1/2(16+0)t
160=8t
t=20

20.

Definitely 20.

If it's not 20 I will seriously walk out of this room!

My room not the Student Room... :ninja:

:ninja:

:awesome:

MarcusTheEskimo

If I remember correctly, S=1/2(u+v)t

You could use that one because the question said to assume uniform a.

So 160=1/2(16+0)t
160=8t
t=20

oh dear i've got loads wrong...

so what was the phase difference between those 2 points?

Izzwizz0

so what was the phase difference between those 2 points?

Pii / 2 or 90 degrees.

The same statement applies for this as above... :yep:

:yep:

Was it 90 deg?

Izzwizz0

so what was the phase difference between those 2 points?

90 degrees

Now it's time for M1! -_-

Fun fun fun...

how was it 90??

The distance from x to y was 5/4 wavelengths so the phase difference was 1/4 wavelengths which is pi/2 or 90 degrees

1 wavelength = 2pi radians or 360 deg.
Half lambda = pi radians or 180 deg
The wave was from a crest to the midpoint (node if it was stationary)
Therefore was a quarter of a wavelength = pi/2 radians or 90 degrees

Izzwizz0

how was it 90??

do you do maths??

this suckkkkkkkkkkkks what about the speed of the ball was one of the answers 1.77 for somethiing?

furry747

Now it's time for M1! -_-

Fun fun fun...

Same but I also got chemistry on the same day... :sad:

:sad:

kayn

do you do maths??

nopee

furry747

1 wavelength = 2pi radians or 360 deg.
Half lambda = pi radians or 180 deg
The wave was from a crest to the midpoint (node if it was stationary)
Therefore was a quarter of a wavelength = pi/2 radians or 90 degrees

I put 540 degrees. Now thinking back it seems stupid but in the exam it seemed to make so much sense. :p:

:p:

I felt overall I did pretty good though :smile:

:smile:

Much better than the first one. :mad:

:mad:

Izzwizz0

this suckkkkkkkkkkkks what about the speed of the ball was one of the answers 1.77 for somethiing?

I remember writing 1.77 somewhere... :cool:

:cool:

***Hannah***

I remember writing 1.77 somewhere... :cool:

:cool:

Same

:biggrin:

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