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willem2's latest activity
W
willem2
replied to the thread
Capacitor charge time, two conflicting answers
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The answers are the same. both give t = C*V/I. I don't understand what the problem is
Aug 23, 2025
W
willem2
replied to the thread
B
Six Pencil Puzzle
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Here are 2 solutions with 7 infinite cylinders. https://www.sciencedirect.com/science/article/pii/S0925772114000819 Major computation...
Jul 26, 2025
W
willem2
replied to the thread
Conflicting definitions of linear independence
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(3) is obviously not true. According to your definition no set of 3 vectors with 4 components can be linearly independent.
Jul 25, 2025
W
willem2
replied to the thread
Conflicting definitions of linear independence
.
A set of vectors is linearly dependent if it contains the zero vector, or if you can produce the zero vector by making linear...
Jul 25, 2025
W
willem2
replied to the thread
Intersection of a circle and a sine curve
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You didn't try to move the circle. The problem statement doesn't forbid this.
Jul 12, 2025
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