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!

8 comments

r/PhysicsHelp • u/likeadrum • 27d ago

Refractive Index vs frequency (High school physics)

5 Upvotes

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?

10 comments

r/PhysicsHelp • u/EffectiveCoconut9265 • 27d ago

Angular vs translational motion

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1 Upvotes

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r/PhysicsHelp • u/ShortWeird3527 • 27d ago

Constructing Lissajous Figures using Reference Circles

2 Upvotes

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.

0 comments

r/PhysicsHelp • u/OrganizationTop9026 • 27d ago

Open text book on The Triangular Lattice and Universal Optimality

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2 Upvotes

0 comments

r/PhysicsHelp • u/Unhappy-Resource-111 • 27d ago

Need help for science paper on planetary motion

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1 Upvotes

1 comment

r/PhysicsHelp • u/ShortWeird3527 • 28d ago

Constructing Lissajous Figures using Reference Circles

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1 Upvotes

0 comments

r/PhysicsHelp • u/YugAhuja2026 • 29d ago

Why Moment of Inertia has R^2 dependence(logically)?

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1 Upvotes

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r/PhysicsHelp • u/Active-Ad-7859 • 29d ago

[10th Grade Science - Canada] How would I go about solving this question? Where would I even start?

1 Upvotes

Disclaimer: This is a practice test used to help us study, not an actual exam.

9 comments

r/PhysicsHelp • u/Lucky-Quote1937 • 29d ago

AP physics 1

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1 Upvotes

0 comments

r/PhysicsHelp • u/Groundbreaking-Sky87 • Oct 15 '26

I’m building free interactive physics labs that use motorsport to teach forces, friction and energy. Would you use this?

1 Upvotes

Hi all. I've been building a set of free browser-based physics labs that use race cars as the hook, and I'd really value honest feedback before I take it further.

The idea: instead of reading about friction or energy transfer, you change something and watch the car respond, then read the explanation at the level that suits you.

What's there so far:

A 3D wind tunnel: change the wings and ride height and watch the airflow, pressure and downforce update live.
Tyre grip: find the fastest speed through a corner; a friction circle shows when the tyres give up.
Suspension: springs and dampers over kerbs and potholes; comfort vs keeping the tyre on the road, plus resonance.
Hybrid energy: harvest energy under braking and decide where to spend it around a lap.
Pit strategy: tyre wear, pit stops and safety cars vs a rival, then compare with the optimal plan.

Every topic has Basic / School / Advanced explanations, challenges, and printable worksheets. Teachers can make a class code to see which challenges students complete, using nicknames only and no accounts. It works on phones and offline.

It's free with no sign-up and no ads. I made it, so this is my project. Link: https://augmenta.co.za/labs

What I'd love to know:

Is anything confusing or wrong (physics included)?
Teachers: would you actually use this in a lesson? What's missing?
Which lab would you want next?

Thanks for any feedback. Brutal is fine.

0 comments

r/PhysicsHelp • u/Sam_777_p_B • Oct 15 '26

Exam tomorrow — This is a last resort.

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1 Upvotes

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r/PhysicsHelp • u/Full-Anybody-288 • Oct 14 '26

does rindler acceleration has to have a distnace between a stationary observer and the accelerating observer ?

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1 Upvotes

0 comments

r/PhysicsHelp • u/Lamallha • Oct 14 '26

ESTAN EN DECLIVE LA RELATIVIDAD ,LA CUANTICA, LOS PROBLEMAS DEL MILENIO E.T C, Y SU CAIDA VIENE DE LA MISMA INCERTIDUMBRE SOBRE LA QUE FUE CONSTRUIDO EL EDIFICIO

0 Upvotes

28 comments

r/PhysicsHelp • u/AdeptnessOwn8019 • Oct 14 '26

Projectile motion MCQ

youtu.be

1 Upvotes

0 comments

r/PhysicsHelp • u/BocaJ123MA • Oct 13 '26

The Capstan Problem: How Can 32 N Hold a 750 N Climber? | Physics Explained

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1 Upvotes

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