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# OCR B G492 Pre-Release help

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1. Pre-Release: http://www.ocr.org.uk/Images/291729-...-june-2016.pdf

Does anyone have any idea of questions which they think are likely to come up?
2. I do not do this course, but from looking at it:
Obviously Hooke's law.
Maybe energy in a spring could be asked for, although by the looks of it they will give you a dot plot, and you will be asked for outliers/spread etc.
Using this you could get the spring constant k using the uncertainty. uncertainty $\approx$ spread $=$ range/2.

You might be asked on how a systematic error could affect this result (skewing of the spring constant by a factor of the systematic error)

By the looks of the third section, nodes and antinodes will come in use along with stable setups of nodes/antinodes with a closed tube of one end.
you may be asked to show the results of equations (1) and (2) equating into the combined form (one minus the other removing c)
Data may also be given and you plot the results, and therefore find the speed of sound. This may lead into an uncertainty calculation in this speed of sound using uncertainty in and
3. (Original post by The-Spartan)
I do not do this course, but from looking at it:
Obviously Hooke's law.
Maybe energy in a spring could be asked for, although by the looks of it they will give you a dot plot, and you will be asked for outliers/spread etc.
Using this you could get the spring constant k using the uncertainty. uncertainty $\approx$ spread $=$ range/2.

You might be asked on how a systematic error could affect this result (skewing of the spring constant by a factor of the systematic error)

By the looks of the third section, nodes and antinodes will come in use along with stable setups of nodes/antinodes with a closed tube of one end.
you may be asked to show the results of equations (1) and (2) equating into the combined form (one minus the other removing c)
Data may also be given and you plot the results, and therefore find the speed of sound. This may lead into an uncertainty calculation in this speed of sound using uncertainty in and
Thanks!

On the dot plot, which values would you say are outliers? Just 1.8, or 2.1 as well?

And how exactly would you work out the spring constant from the uncertainty?

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