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Calculus (Polynomials, Series and Functions), Differential Equations, Operators, Normal Distribution, Number Theory (Authors: Infrared - IR; QuantumQuest - QQ; fresh_42 - FR)

Homework Help

Introductory Physics Homework Help

Two blocks connected with a small string pulled up a ramp by string

Advanced Physics Homework Help

Working out harmonic oscillator operators at ##L \rightarrow \infty##

Precalculus Mathematics Homework Help

Calculate the total area of this rectangle

Calculus and Beyond Homework Help

Verifying the flux transport theorem

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Chemistry Concentration greater than 100%?

Engineering and Comp Sci Homework Help

Comp Sci Find a Best-Case Example of QuickSort
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Science Education and Careers

Science and Math Textbooks

Classical Supplement to Griffiths E&M/Prep for Graduate E&M

STEM Academic Advising

Other How do I choose a topic for the qualifier?

STEM Educators and Teaching

Quickly Transitioning to Teaching Online Due to COVID-19

STEM Career Guidance

Engineering Want to study mechanical engineering... but failing physics exams?

Physics

Classical Physics

I An isolated object can rotate only about its center of mass

Atomic and Condensed Matter

A Kondo effect
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Quantum Physics

I 'Off-shell' particle in an external field...

Special and General Relativity

B Is there a thought experiment to show that the speed of light is constant?

Beyond the Standard Model

A Strand model published
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High Energy, Nuclear, Particle Physics

I Detection of Neutral Currents
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Other Physics Topics

A What's the direction of electric field in Laguerre-Gaussian beams?

Astronomy and Cosmology

Astronomy and Astrophysics

I A Puzzle Regarding the Time Between Consecutive March Equinoxes

Cosmology

Insights The Evolution of the Universe, Cosmic Web and Connections - Comments

Mathematics

General Math

I Local minima and complex roots

Calculus

I Am I using the right limits on this triple integral?

Differential Equations

A 11 coordinate system for separation of variables

Topology and Analysis

I The Order Topology ... ... Singh, Example 1.4.4 ... ...

Linear and Abstract Algebra

B Rotating a point in 3-space through an angle about some vector

Differential Geometry

A Connections and distributions

Set Theory, Logic, Probability, Statistics

I Determining the covariance of two parameters given their explicit relationship

MATLAB, Maple, Mathematica, LaTeX

MATLAB Using ifft2 to transform wavenumber-frequency to space-time

Engineering

General Engineering

A/C style heat exchanger instead of intercooler
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Mechanical Engineering

Torque calculation electric small vehicle

Electrical Engineering

Is there any utility in circuit swapping line and neutral of power supply to always connect lower power rail to neutral?

Aerospace and Astronautics Engineering

Prop disc thrust uniformity in turns vs wing position
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Nuclear Engineering

MCNP fatal error

Materials and Chemical Engineering

Semiconductor polymers P3HT

Other Sciences

Chemistry

Calculate the HCl concentration in H2O from the conductivity

DIY Projects

Misc. Help with this Retraction Mechanism for a Trap

Biology and Medical

Medical Covid-19 fatal effects

Programming and Computer Science

C/++/# C++ Program Suddenly Ends after Reading Huge Data

Earth Sciences

Better seismometry, Quiet Earth, Thanks Coronavirus

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Only one of two browsers finds physicsforums
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General Discussion

PF Photo Contest - Shelter In Place (3/28-4/3)

Science Fiction and Fantasy Media

How the mass of a planet affects the evolution of life on that planet

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Why STEM songs are so rare?

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