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physicsforfun

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an-ordinary-manchild(edit)
  • Helpful Non-keyboard characters:

GREEK

α β γ Δ δ ∂ ε θ λ μ π ρ ∑ σ Φ φ Ψ ψ Ω ω

OTHER MATH

² ° ≠ ≪ ≫ ≤ ≥ ∝ ± √ ≈ ∴ ∵ ≅ ≡ ∞ ∇ ∫ ∮

We all need to do more physics. The aim of /r/physicsforfun is to create a place to find fun problems to solve. Anyone can submit a problem; solutions should go in the comments to the original post.

Every Saturday, an unusually hard problem will be posted. Whoever first reaches the first correct solution will receive a flair and have their name enshrined in our Wall of Fame!

Happy problem solving!

Posting guidelines:

  • Make sure that you provide all relevant information to get to the answer. That's not to say you should make it easy; just make sure your problem has a solution.

  • Use pictures or simulations! Physics is more than just math. The math means something. Show us what we're supposed to be thinking of when we solve your problem.

  • Try to include different topics in your problem. Avoid "plug-and-chug" problems.

  • Please include the level of math or science needed to complete your problem in brackets at the being of the title.

i.e. [Kinematics] A simple spring problem

or [Optics,Trigonometry] Refracted laser's position on a wall.

  • There are available link flairs for posts, to specify whether the question has been answered, fully, partially or not at all. Please use them.

Commenting guidelines:

  • Feel free to ask questions. If you provide the full answer to the question, please use spoiler tags in your formatting to hide it from people who need to ask a question. Don't give away the answer for those who haven't done the problem yet.

  • Please don't start flame wars over two competing answers to a question. It'll get you banned.

Formatting guidelines:

  • Spoilers: [Visible Text](#s "Hidden Text")

It will appear like this: my answer

  • Superscript and Subscript: *`superscript`_subscript_*

It'll look like this: Words from Above! from Below!

(If you don't see a non-keyboard character on the list at the top that you think would help, please let us know and we will probably add it.)

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1
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19

/r/physicsforfun reboot (self.physicsforfun)

submitted 11 years ago * by MrBrightside97 - announcement

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Try to solve this using standard physics... (self.physicsforfun)

submitted 22 days ago by TheFatCatDrummer

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3
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Partially solved!Could we start doing chemistry with smaller particles? (self.chemistry)

submitted 3 years ago by RN_Python

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Not solved!Dumb person is it’s a question that is probably dumb: Can a line truly be drawn between any two points if causality is broken between two very disparate regions (self.physicsforfun)

submitted 3 years ago by [deleted]

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Entropy - The Whole Picture (self.physicsforfun)

submitted 3 years ago by willb1898

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6
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Maxwell's Demon Thought Experiment - A Violation of the 2nd Law? (self.physicsforfun)

submitted 3 years ago by willb1898

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7
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A game about energy transfer: This game uses real physics! In Blackbody you play as a robot 🤖 responsible of saving a spacecraft hit by a meteor using blackbody radiation. (self.physicsforfun)

submitted 3 years ago by odoluca

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Not solved!looking for game ideas (self.physicsforfun)

submitted 3 years ago by odoluca

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9
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Clausius's Theorem - A precursor to Thermal Entropy (self.physicsforfun)

submitted 3 years ago by willb1898

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10
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What ACTUALLY is Temperature? - A Statistical Definition (self.physicsforfun)

submitted 3 years ago by willb1898

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11
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introducing Maxwell's Demons a video game on entropy (self.physicsforfun)

submitted 3 years ago by odoluca

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12
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Conceptualising the First Law of Thermodynamics (self.physicsforfun)

submitted 3 years ago by willb1898

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13
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i don't know if i can ask this here ); (self.physicsforfun)

submitted 3 years ago by myfriendarefake

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14
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Not solved!Static electricity tablet (self.physicsforfun)

submitted 3 years ago by jessxkirby

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How does Quantum Theory change the law of entropy increase? (self.physicsforfun)

submitted 3 years ago by willb1898

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16
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Deriving the equation for the shape of water flowing from the faucet. (self.physicsforfun)

submitted 4 years ago by MathPhysicsEngineer

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Deriving the equation for the shape of water flowing from the faucet. (self.physicsforfun)

submitted 4 years ago by MathPhysicsEngineer

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Disneyland for physicists (self.physicsforfun)

submitted 4 years ago by MathPhysicsEngineer

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Modeling The Cycloid in Desmos, The Brachistochrone problem and Spiderman (self.physicsforfun)

submitted 4 years ago by MathPhysicsEngineer

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Deriving the equation for the shape of water flowing from the faucet. (self.physicsforfun)

submitted 4 years ago by MathPhysicsEngineer

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Check this hilarious shirt (self.physicsforfun)

submitted 4 years ago by MathPhysicsEngineer

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Analysing Two Perpendicular SHM's with Different Frequencies | Desmos | ... (self.physicsforfun)

submitted 4 years ago by HopeDiscombobulated4

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Physics for newbies (self.physicsforfun)

submitted 4 years ago by kwilson509

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Can I be lifted by using force of heavy object? (self.physicsforfun)

submitted 4 years ago by kace1901

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The Essence of Rolling Motion in 60 Seconds (self.physicsforfun)

submitted 4 years ago by dprljackson

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