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pbuk's latest activity
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pbuk
replied to the thread
Geometry: Similar Shapes
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Edit: I have just realised that this is Q.22 from Edexcel Maths Paper 1 November 2017. I'm off to read the examiner's report. They...
Jul 16, 2025
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pbuk
reacted to
hutchphd's post
in the thread
Geometry: Similar Shapes
with
Like
.
And that purpose seems to me to be malicious. Is this a restatement of the parental admonition to "do as I say, not as I do": "do as I...
Jul 16, 2025
P
pbuk
replied to the thread
Suggestion
Suggest "Informative" feedback reaction icon change away from the latest "pink brain" emoticon
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Bump for @Greg Bernhardt: are these overlapping icons intentional?
Jul 15, 2025
P
pbuk
replied to the thread
Geometry: Similar Shapes
.
You haven't got yourself in a muddle, it is a trick question and you are in a muddle because you haven't spotted the trick. I'm not...
Jul 15, 2025
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pbuk
replied to the thread
Understanding Brent's root finding method
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According to p.50 of Brent's original publication (it is available on archive.org): "practical tests show that this [would slow down]...
Jul 15, 2025
P
pbuk
reacted to
Dale's post
in the thread
Rethinking Physics Education
with
Like
.
I would replace step 1 with laboratory exercises. You can learn more about voltage and current with a multimeter than with pictures. This ^
Jul 15, 2025
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pbuk
replied to the thread
B
Excel: converting a 3-ish week count into a monthly count
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This makes no sense: the year is not 360 days long*. The best way to convert a cost per day to a cost per month is usually to multiply...
Jul 7, 2025
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pbuk
replied to the thread
Electrical
Vaillant VRT350 to Tado smart thermostat
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The VRT350 is more than a simple thermostat and can be installed in many different system configurations. In order to install a Tado (or...
Jul 7, 2025
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pbuk
replied to the thread
Suggestion
Suggest "Informative" feedback reaction icon change away from the latest "pink brain" emoticon
.
Yes, is the 'dent' which makes the icons overlap (and therefore harder to recognise) intentional? It seems to be caused by...
Jul 7, 2025
P
pbuk
replied to the thread
Ubuntu slow for compute-intensive applications?
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You might find Mint XFCE (based on Ubuntu LTS but with an upgrade path between releases, and crucially without Ubuntu's snap-based...
Jul 1, 2025
P
pbuk
replied to the thread
How to calculate Tension for a series of connected points?
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Your 'trial' model is too simple - you are only considering the situation where force is applied parallel to the direction of the last...
Jul 1, 2025
P
pbuk
replied to the thread
How to calculate Tension for a series of connected points?
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Simple code for this is available on the interweb e.g...
Jun 30, 2025
P
pbuk
replied to the thread
How to calculate Tension for a series of connected points?
.
As you said yourself You are having trouble because you are not using an appropriate model. Let's start again. To model a rope, use...
Jun 30, 2025
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