Count rate, by definition, means counts per second. One can certainly have counts per minute but that is not count rate. My headings may be wrong, you’ll have to specify exactly where you mean, but not for that reason.
@@nutshellphy I am keeping strictly to the quantity / unit format of labelling column headings and axes of graphs. Also, I am not bothered about the per second or per minute. The heading of Column A is perfect. The heading of columns B and C ought to be counts/per minute and N/per minute. The heading of column D should be ln (N/per minute) So as it currently stands, your unit in columns B and C is 'minutes' and the label of column D is dimensionaly incorrect since we can only take logs of a number. The advice to repeat, take means, be consistent with DP and/or SF is great. Hope this all makes sense.
Well, I can understand that but I think that you should be since Edexcel expect that you know that count rate means per second. Like I said, they have tested this in the past. They are extremely fussy about details. If I put the quantity/unit in any other format, I should not have. I’m amazed if I did, I am very strict about this normally. I will check.
Shouldn't you have included error bars and given a percentage uncertainty for the half thickness? Just asking because this is important in the practical endorsement.
Although a couple of experiments do suggest error bars, they aren’t required for the practical endorsement, nor are uncertainties. Those are important to know how to calculate for the practical questions though. Not for log graphs though.
The practical stuff, yes, some of it. Because the calculation of uncertainties can be done in different ways, for example. But the theory, no. Though you will find that different boards have some extra or fewer topics or they may require more or less detail in certain areas.
I think you need to sort out your column headings in the table. Count rate is measured in min^-1. Column D should be headed ln(N/min^-1)
Count rate, by definition, means counts per second. One can certainly have counts per minute but that is not count rate. My headings may be wrong, you’ll have to specify exactly where you mean, but not for that reason.
If you look back at Paper 3 from a few years ago, this very thing was tested. 2019 I think.
@@nutshellphy I am keeping strictly to the quantity / unit format of labelling column headings and axes of graphs. Also, I am not bothered about the per second or per minute.
The heading of Column A is perfect.
The heading of columns B and C ought to be counts/per minute and N/per minute.
The heading of column D should be ln (N/per minute)
So as it currently stands, your unit in columns B and C is 'minutes' and the label of column D is dimensionaly incorrect since we can only take logs of a number.
The advice to repeat, take means, be consistent with DP and/or SF is great.
Hope this all makes sense.
Well, I can understand that but I think that you should be since Edexcel expect that you know that count rate means per second. Like I said, they have tested this in the past. They are extremely fussy about details.
If I put the quantity/unit in any other format, I should not have. I’m amazed if I did, I am very strict about this normally. I will check.
You are absolutely right, my apologies, the counts per minute columns in the table should all be counts/minute^-1 at the top!
these are helping me so much thankyou
Good !
Shouldn't you have included error bars and given a percentage uncertainty for the half thickness?
Just asking because this is important in the practical endorsement.
Although a couple of experiments do suggest error bars, they aren’t required for the practical endorsement, nor are uncertainties. Those are important to know how to calculate for the practical questions though. Not for log graphs though.
@@nutshellphy I do OCR Physics A. Surely it differs for different exam boards, right?
The practical stuff, yes, some of it. Because the calculation of uncertainties can be done in different ways, for example. But the theory, no. Though you will find that different boards have some extra or fewer topics or they may require more or less detail in certain areas.
my higgs boson 🤝