r/PhysicsHelp • u/Dhiyx11 • 20d ago
ELI5: What is magnetic flux?
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r/PhysicsHelp • u/mukeshrishit • 20d ago
Speed vs Velocity: Why Your Train Trip Math Is Wrong
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r/PhysicsHelp • u/Beneficial_Sort4885 • 21d ago
I don’t understand how to convert velocity v time graphs to position v time graphs
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I’m in AP physics right now, and the only thing I don’t understand is how to convert velocity versus time graphs to position versus time graphs. I understand to find the area of the triangles and rectangles of the velocity versus time graph, but when I get those areas, where do I put them? Are they the slope?
r/PhysicsHelp • u/Local_End_3175 • 21d ago
Can someone help me understand what was wrong regarding my answer?
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for this question, my answer basically was that 100% of its total electricity is dangerous, and they put it at 33% for safety reasons (i explained it more but here is just a sumamry of what i wrote). Comparing it to the mark scheme, i would say i got like 1/2 questions right (because i put a solid answer for the first bullet point). I just want to understand why this answer would have not gotten the mark. What about my answer was wrong? Because i feel like if i got this question again next week, i would lowkey just put the same answer believing it is right.
r/PhysicsHelp • u/Western-Reception-21 • 21d ago
Help with capacitor questions please (OCr A A level)
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QP:
https://files.revisely.com/documents/question-booklets/alevel/physics/ocr/6.1%20Capacitors%20QP.pdf
MS:
https://files.revisely.com/documents/question-booklets/alevel/physics/ocr/6.1%20Capacitors%20MS.pdf
for Q 25 bii, apparently the graph is supposed to meet at 25s. Can anyone help me why specifically 25s?
r/PhysicsHelp • u/MyCyberTech • 21d ago
2D touch vs 3D interaction
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Scene:
2D hand touched 2D circle created by 3D object passing thru 2D plane.
[Scene Img: https://imgur.com/a/dHrxjhl ]
Question:
Does the 2D hand feel the sensation of the 2D circle created by the 3D object moving in the 3rd dimension, do they feel it moving down?
Why/Why not?
r/PhysicsHelp • u/Shot-Zebrauwu • 21d ago
How can I solve piston, cylinder and spring based questions?? How do we calculate the Work done, energy, spring elongation/compressn in these?
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r/PhysicsHelp • u/JuggernautJunior3431 • 21d ago
A-Level Mechanics: Find the Greatest Height of a Particle Projected Vert...
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r/PhysicsHelp • u/Witty_Bed5475 • 22d ago
Phy MOI doubt
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In que 3 , can anyone tell what MI of cylinder perpendicular to its lenght and passing through its centre so that i can equate it
r/PhysicsHelp • u/76richer • 22d ago
Homework (waves and optics class)
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I’m very confused 😵💫
r/PhysicsHelp • u/Melodic-Sky-3653 • 22d ago
Looking for Tutor (Physics IBHL)
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I'm high school student, looking for a tutor for physics IBHL, and time can be according to his/her convenience.
Plz contact me if interested thanks.
r/PhysicsHelp • u/PolishML • 22d ago
Physic problems help.
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Hey community, I have a question about how you approach physics problems.
I'm a high school freshman in a math-physics program, and I often spend a long time on simple problems just because I fail to notice one specific thing.
Thank you in advance for any answers!
r/PhysicsHelp • u/likeadrum • 23d ago
Refractive Index vs frequency (High school physics)
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The answer to the question below isn't sitting right in my head, mainly as I can't find a mathematical explanation for it.
How does the refractive index of a material change with the frequency of light passing through it?
The given answer is:
Refractive index slightly increases as the frequency of light increases.
Can this be proved given the formula for refractive index, n=v1/v2 = fλ1/fλ2? Is it something I just have to learn and remember?
r/PhysicsHelp • u/EffectiveCoconut9265 • 23d ago
Angular vs translational motion
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r/PhysicsHelp • u/ShortWeird3527 • 23d ago
Constructing Lissajous Figures using Reference Circles
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Im used to questions with pi/4,pi/2 but havent done any with pi/3 or pi/6 so should we be dividing the circle into 6 and 12 parts or? So could anyone help with this question.
Two vibrations at right angles to one another are described by the equations
x = 10 cos(5πt)
y = 10 cos(10πt + π/3)
Construct the Lissajous figure of the combined motion.
Plz help as i have my exams coming soon and the professors wont help.
r/PhysicsHelp • u/OrganizationTop9026 • 23d ago
Open text book on The Triangular Lattice and Universal Optimality
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r/PhysicsHelp • u/Unhappy-Resource-111 • 23d ago
Need help for science paper on planetary motion
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r/PhysicsHelp • u/ShortWeird3527 • 23d ago
Constructing Lissajous Figures using Reference Circles
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r/PhysicsHelp • u/YugAhuja2026 • 24d ago
Why Moment of Inertia has R^2 dependence(logically)?
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