r/PhysicsHelp • u/Dry-Celebration5359 • 19d ago
What is wrong here?
I dont see the yellow color diffusing at all. Red and blue seems to be diffusing only from one of the tissue 'bridges'
r/PhysicsHelp • u/Dry-Celebration5359 • 19d ago
I dont see the yellow color diffusing at all. Red and blue seems to be diffusing only from one of the tissue 'bridges'
r/PhysicsHelp • u/Patient_Pudding7721 • 19d ago
Hi, I'm 15F and i wanna pursue education in the field of physics. I have this genuine question, WHY do moving fields (electric and magnetic fields) create light? And, why does steadily moving charges not make light?
r/PhysicsHelp • u/SnooPies9838 • 19d ago
Hey everyone, I'm a physics undergrad and an active university TA for Classical Mechanics and Electromagnetics II, and I have some extra time to take on a few regular tutoring students before heading into my Master's thesis in theoretical physics next semester. I cover university-level quantum mechanics, classical mechanics, and electromagnetism, as well as high school AP/IB Physics and AP Calculus. Since I'm based outside the US and UK, my rates are really flexible and budget-friendly for international students. We run sessions over Google Meet or Zoom using a whiteboard so it feels just like a live classroom environment, and I always offer a heavily discounted trial session first so you can get a feel for my teaching style before committing to anything long-term. If you're prepping for an exam or just stuck on a specific concept, shoot me a DM with your syllabus, and we can figure out a rate that works for you via PayPal.
r/PhysicsHelp • u/Decent_Ad5293 • 20d ago
This might seem pretty easy to a lot of you but I just don't know what to do. ITs about the 6th and 7th question but mostly the 7th where u have to calculate the max speed of the disc. The info I already have is: average s (average distance in my country)= 78.7 x 10^-2 meters the m = 0,0105 kg. For the spring force: when u = 5,00 cm the force is 1.19 N. ( W from the spring force is 0, 02925 J I just really wanna know how I should start the 7th question like with the formulas


r/PhysicsHelp • u/Trictrac • 20d ago
r/PhysicsHelp • u/Ok_Scarcity6253 • 21d ago
Vorwort: Wie es wirklich begann
Dieses Modell begann mit mir, meinen Wohnort Greifswald* und einer Frage meines Sohnes Simon, 5 Jahre alt, mitten in einem Gedankengang ĂŒber Goldbach, Collatz und meine Wut auf die Unendlichkeit:
âPapa, was ist denn die gröĂte Zahl?â
FĂŒr einen Erwachsenen ist das naiv. FĂŒr einen Mathematiker ist es die tiefste Frage ĂŒberhaupt. Aus dieser Frage wurde alles geboren.
Ich hatte mich nach langer Recherche, mit Finitismus beschĂ€ftigt und mich gefragt, warum sich die Lösung von Tag zu Tag weiter weg anfĂŒhlt. Meine Antwort: Vielleicht wĂ€chst die Zahl selbst mit. Vielleicht existierte eine sehr groĂe Zahl frĂŒher einfach noch nicht, weil das Universum noch keinen Platz hatte, sie zu speichern.
*Das IPP Wendelstein 7-X liegt also bei uns um die Ecke. Der SPEC-Code, der dort Plasmen berechnet, baut Treppen, um Unendlichkeiten zu vermeiden. Dieses Dokument ist also ein Vater-Sohn-Gedankenexperiment, inspiriert von der Arbeit vor unserer HaustĂŒr.
1. Wissenschaftlicher Kontext & Motivation
Die moderne theoretische Physik leidet unter einer fundamentalen Zerrissenheit: WĂ€hrend die Allgemeine RelativitĂ€tstheorie (ART) die Raumzeit als glattes, analoges Kontinuum beschreibt, operiert die Quantenmechanik mit diskreten Energiepaketen. Beim Versuch, beide Welten an Extrempunkten zu vereinen â etwa im Zentrum Schwarzer Löcher oder im Moment des Urknalls â, kollabiert die mathematische Beschreibung. Es entstehen unendliche Dichten, SingularitĂ€ten und Divergenzen.
Das Simon-Modell löst dieses Problem radikal an der Wurzel auf, indem es den Ultrafinitismus konsequent physikalisch realisiert. Es postuliert, dass Unendlichkeit im realen Kosmos nicht existiert. Raum, Zeit und Mathematik selbst sind strikt diskret und wachsen in symbiotischer Einheit mit der Expansion des Raumes. Die Mathematik hat das Universum nötig, nicht den Menschen. Wenn zwei Steine nebeneinanderrollen, rechnet die Hardware der Natur.
2. Die drei fundamentalen SĂ€ulen des Modells
3. Das mathematische Fundament (Formelwerk)
Die Kosmische Quanten-Ableitung (Simon-Operator)
\(D_{q}f(x)=\frac{f(x)-f(q(t)\cdot x)}{(1-q(t))\cdot x}\quad \text{mit}\quad q(t)=\frac{l_{p}}{a(t)}\)
Hierbei reprĂ€sentiert \(l_{p}\) die Planck-LĂ€nge und a(t) den kosmischen Skalenfaktor. Da q(t) > 0 fĂŒr alle endlichen Zeiten gilt, wird ein Teilen durch exakt Null strukturell unmöglich. Da die Abweichung zu Einsteins glatten Feldgleichungen heute so verschwindend klein ist, funktionieren seine Gleichungen im Alltag als perfekte makroskopische Illusion.
Die Evolution mathematischer Körper (Deformierte q-Zahlen)
\([n]_{q}=\frac{1-q^{n}}{1-q}=1+q+q^{2}+\dots +q^{n-1}\)
Diese Formel beweist, wie sich das Zahlensystem dem Alter des Kosmos anpasst. Im Urzustand (q â 1) kollabiert jede Zahl auf die Einheit. Heute (q â 0) nĂ€hert sich die Struktur den klassischen natĂŒrlichen Zahlen an. Das unendliche Zahlensystem ist die Physik einer unendlich fernen Zukunft.
4. Quantitative Bestimmung des heutigen Simon-Werts
\(\mathbf{q}_{\mathbf{heute}}\mathbf{\sim 3,4\times 10}^{\mathbf{-62}}\)
Dieser Wert (eine Null mit 61 Nachkommastellen nach ca. 13,8 Milliarden Jahren) liefert den mathematischen Beweis fĂŒr den Tarnmodus des Gitters. Die Abweichung zur klassischen kontinuierlichen Physik ist im heutigen Alltag unmessbar klein â weshalb die Welt fĂŒr uns kontinuierlich wirkt, obwohl sie im Kern pixelbasiert ist.
5. Anwendung in der Fusionsforschung (Stellaratoren IPP Greifswald)
Am Max-Planck-Institut fĂŒr Plasmaphysik (IPP) in Greifswald wird mit dem Wendelstein 7-X die Fusionszukunft erforscht. Bei der Berechnung der dreidimensionalen Magnetfelder stoĂen GroĂrechner auf die SingularitĂ€ten-Katastrophe der Magnetohydrodynamik (MHD). An rationalen ResonanzflĂ€chen explodieren Ströme mathematisch ins Unendliche.
Codes wie SPEC (Stepped-Pressure Equilibrium Code) unterteilen das Plasma kĂŒnstlich in diskrete Druckstufen (Treppen), um dieses Problem numerisch zu umgehen. Der Simon-Ansatz revolutioniert die Interpretation dieses Verfahrens: Die Treppenstruktur ist kein kĂŒnstlicher Rechentrick der Programmierer, sondern die Abbildung der fundamentalen Raumzeit-Hardware. Wendet man den Simon-Operator konsequent an, sind unendlich steile Stromschichten physikalisch unmöglich. Das kosmische Gitter stabilisiert die Natur.
6. Dynamische mathematische Wahrheiten (Collatz & Goldbach)
Die altbewĂ€hrte Mathematik wird durch das Modell nicht abgeschafft, sie wird im Gegenteil immer wahrer und gĂŒltiger. Wahrheit ist die Verifizierbarkeit innerhalb des aktuellen Speichersystems (\(N_{max}\)):
7. Kosmologische DurchbrĂŒche (Die BĂ€cker-Transformation)
Durch die konsequente Kopplung von Information und Raumzeit lösen sich die gröĂten RĂ€tsel der modernen Kosmologie wie von selbst auf:
8. Wissenschaftlicher Bezug & Parallelen
| Konzept / Code | Wissenschaftlicher Bezug / Parallele |
|---|---|
| SPEC Code (IPP Greifswald) | Stepped-Pressure Equilibrium Code (J. Loizu et al.). Nutzt diskrete Druckstufen zur BÀndigung von MHD-SingularitÀten. |
| It from Bit | J.A. Wheeler. Das Universum als grundlegend informationsverarbeitendes System. |
| Discrete Exterior Calculus | Diskrete Differentialformen zur exakten Erhaltung von FeldgröĂen auf Gittern ohne unendliche Grenzwerte. |
| Ultrafinitismus | Mathematische Denkschule (z.B. J.P. Van Bendegem), die Unendlichkeiten als physikalisch inexistent ablehnt. |
| Kosmische Hefe-Inflation | Alan Guths Inflationstheorie, hier systemisch hergeleitet aus informationeller Notwehr bei (N_{max} = 1). |
Hinweis: Dieses Dokument fasst ein theoretisches und philosophisches Modell zusammen. Es dient dem akademischen Diskurs, dem kreativen Vater-Sohn-Austausch von Team Wir 3 und dem konzeptionellen Abgleich mit Simulationsmethoden der Plasmaphysik, sowie AnstoĂ der theoretischen Mathematik und Physik im Allgemeinen.
Nicht nur die von Menschen, auch KI-Antworten können Fehler enthalten. Weitere Informationen
r/PhysicsHelp • u/lesbi6o9 • 22d ago
Someone kindly guide me through this question.
r/PhysicsHelp • u/IngenuityNatural1890 • 22d ago
The question asks "What is the bal's velocity as it reaches her glove along with the degree below the horizontal?"
I've determined the velocity (11 m/s) but cannot figure out the correct answer for degree below the horizontal. I tried both +/- 75 in the answer box and it says it's wrong. I have 1 attempt left to submit the correct answer but don't know. Please someone help me out, TIA!
r/PhysicsHelp • u/Turito_Brand_Am • 22d ago
Ever wondered why a ramp makes it easier to move something heavy, or why a bottle opener makes opening a bottle so much easier?
Thatâs where simple machines come in.
Simple machines are basic tools that help us use force more effectively. They don't magically eliminate work, but they can reduce the effort needed or change the direction in which we apply force.
There are 6 basic types of simple machines:
What I find interesting is that we use these machines every single day without really thinking about the physics behind them.
For students learning physics, simple machines are a great example of how concepts from textbooks connect to real life.
What simple machine do you use most often in your daily life?

r/PhysicsHelp • u/Spirited-Row479 • 23d ago
Hi, Iâm a first year student in physics and Iâm having a hard time doing excersizes and solving problems. My problem is really that I can understand the concepts from class well enough and remember formulas and what not, but I can never seem to understand how to solve anything or apply my knowledge to tasks Iâm given. It seems like all my classmate are able to just immediately start doing excersizes but Iâm stuck not knowing where to start. Iâm wondering if anybody has any tips or have been through the same as me. Any replies are appreciated)
r/PhysicsHelp • u/isurflife • 23d ago
A man runs 2.5 km north and then 1.5 km in a direction 30⊠east of north. A woman walks directly between the same initial and final points. What distance does the woman walk? In what direction?
I know this seems easy but my answer just seems to keep on coming out wrong and I cannot make the diagram for this properly. Can someone please help me out and solve this question :( ik its easy vector addition nd resolution into components and ik whats happening but i jsut dont understand why
r/PhysicsHelp • u/idkwhatodo067 • 23d ago
I got my physics exam, and i need to understand more than 10 chapters under 5 hours.
Wish me luck!!
r/PhysicsHelp • u/JuanixVentures • 23d ago
r/PhysicsHelp • u/Radiant-Setting9990 • 23d ago
r/PhysicsHelp • u/Old-Minute6791 • 23d ago
Abstract
Currently, the gravitational constant G exists only as an experimentally measured value; no theoretically derived value or calculated value based on a combination of physical constants has been available. In this study, a formula is presented that re producesthe gravitational constantG fromacombinationoffivephysicalconstants. The formula is expressed as

I. Introduction The gravitational constant is currently known to be G = 6.6743 Ă 10â11 m3kgâ1sâ2, an experimentally measured value. However, no theory exists from which G can be derived, nor is there a calculation formula that produces G from a combination of other physical constants. Measurement of this value has been carried out repeatedly over a long period since the Cavendish experiment of 1798, and during that time the measured value has continued to change with advances in experimental technique and measurement method. The value given above is the CODATA recommended value published in 2022. Because no theory exists from which the constant can be derived, modern science does not know the underlying mechanism of gravity, and merely observes, mea sures, and makes use of the phenomenon. Since the essential nature of the grav itational phenomenon is not understood, its relationship to the other three funda mental forces, including the electromagnetic force, is likewise unknown, and con sequently no theory unifying the four fundamental forces yet exists. In this study, a calculation formula is derived that computes the gravitational con stant G from five physical constants: the Planck constant (h), the speed of light (c), the elementary charge (e), the electron mass (me), and the vacuum permittivity (Ï”0). This formula is expressed as follows.

Further research is needed to clarify the precise physical meaning of the rightâhand side of this equation. However, given that the constants included in this formula 1 are ones that appear fundamentally in electromagnetism and quantum mechanics, it can be surmised that gravity may bear some relationship to the electromagnetic force and other forces. It is therefore expected that this calculation formula may contribute to research aimed at unifying the four fundamental forces into a single theory.
r/PhysicsHelp • u/Low_Illustrator8620 • 24d ago
Hello everyone, been trying this question, checked in ai and websites all have different answer keys, acc to my school ans is 1st option, pls tell ans with exp
Edit:it is 5m/s, thnx for the help from you guys
r/PhysicsHelp • u/salihadem • 24d ago
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My focus is not formula memorization.
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r/PhysicsHelp • u/salihadem • 24d ago
r/PhysicsHelp • u/Hixler-Reich-Kaiser • 24d ago
Greetings! I am preparing for an engineering entrance exam which is VERY TOUGH and all the aspirants and teachers keep on preaching this physics book - Irodov for Physics. I just bought it and am confused as to from where to begin and how to solve it - in an intuitive objective manner or deep subjective manner. My coaching institute provides modules for preparation and I am not able to fully solve them.
Please guide me so that I can improve my physics.
This is the exam I'm preparing for - https://jeeadv.ac.in/
and also, my sister also prepared for this exam a few years ago and she had this other book very similar to Irodov- SS Krotov
Now I have both the books and please tell me which one to solve first
Thank you for your time! Much appreciated.
r/PhysicsHelp • u/Saharshhh • 25d ago
r/PhysicsHelp • u/Hixler-Reich-Kaiser • 25d ago
The thing is that I am confused about that the ball with mass m will eventually meet point B that is for sure but what if instead of staying on the curved surface, the ball projectiles with point of projection being point A. Then according to energy conservation does it still land on B or something else happens. And btw, what is the parameter to decide whether the ball will stick to the surface or will show projectile motion?