Gavran's latest activity
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GGavran reacted to Guineafowl's post in the thread Three phase transformer phase angle and group with
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Thanks, so by that definition the group 1 will be a 30°, and the group 11 a 330°? There were two other examples: I make these group 7... -
GGavran replied to the thread Three phase transformer phase angle and group.This is group 1. If H1 points at 12 o'clock, X1 will point at 1 o'clock. This is group 11. If H1 points at 12 o'clock, X1 will point at...
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GGavran replied to the thread Problem involving ordinary differential equation.The substitution ## y_1=10^y ## simplifies the equation $$ 10^ydy=\frac{dx}{x\ln10} $$ to the equation ## dy_1=dx/x ##. The general case...
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GGavran replied to the thread High School Ant on a stretchy rope puzzle.In the general case, the time that the ant needs to reach the end of the rope is $$ T=\frac cv(e^\frac v\alpha-1) $$, where ## c ## is...
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GGavran replied to the thread High School Ant on a stretchy rope puzzle.You can notice from the animation that the ant absolutely moves at an increasing speed, while the rope end absolutely moves at a...
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GGavran replied to the thread Insights AI Enriched Problem Solving.It is good to see how problem-solving by humans can be enriched by artificial intelligence. It can also be seen that problem-solving by...
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GGavran reacted to robphy's post in the thread RIP Anthony J Leggett (1938 - 2026), superfluidity with
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https://en.wikipedia.org/wiki/Anthony_Leggett https://www.nytimes.com/2026/03/11/science/anthony-james-leggett-dead.html... -
GGavran reacted to Charles Link's post in the thread Undergrad Why Does Snow Pack Better Near the Melting Point? with
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Happy Groundhog Day 2-2-26. The above is a photo of the snowman that I have in my backyard. It now measures about one inch over 4'0"... -
GGavran replied to the thread Insights AI Enriched Problem Solving.I remember the thread posted by @chwala in 2024, which is used as a reference in the article. The geometric solution provided by...
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GGavran replied to the thread High School Potato paradox.A veridical paradox is one of three types of paradoxes, which is what defines it as a paradox.
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GThe question is designed to suprise you. To regain a feeling of intuition you can take the numbers and apply them to da different...
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GI can see why this is considered paradoxical. It took me an hour to build a spreadsheet yesterday to do just the basics of the maths...
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GGavran reacted to Greg Bernhardt's post in the thread Insights AI Enriched Problem Solving with
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https://www.physicsforums.com/insights/ai-enriched-problem-solving/ Author: @neilparker62 -
G100 kg of potatoes consists of 99% water. After some water evaporates, the potatoes consist of 98% water. What is the new weight of the...
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GI've read a couple moderating counters to this article and as with most things the truth likely lies in the middle. That said, the...