1. Homework Help

   1. Introductory Physics Homework

      Object within a Pan Spring Motion

   2. Advanced Physics Homework

      Statistical physics question - particles in a magnetic field

   3. Precalculus Mathematics Homework

      Proof by contradiction

   4. Calculus and Beyond Homework

      Finding the ratio of the volumes of a cube and a sphere

   5. Biology, Chemistry and Earth Homework

      Genetics Problem -- six independently assorting genes in a plant

   6. Engineering and Computer Science Homework

      Sketch the waveform to represent the transient response

2. Science Education and Careers

   1. Science and Math Textbooks

      IE Irodov equivalent for Maths?

   2. Academic Guidance

      How to be proactive?

   3. Educators and Teaching

      Helping students transition from High School to University

   4. Career Guidance

      Ph.D. - worthwhile?

3. Physics

   1. General Physics

      Calculate, not measure the value of C

   2. Classical Physics

      Derivation of the Euler-Lagrangian

   3. Quantum Physics

      Is the ground state energy of a quantum field actually zero?

   4. Special and General Relativity

      Relative Truth

   5. Atomic and Condensed Matter

      Energy gap between energy bands in solid state physics

   6. High Energy, Nuclear, Particle Physics

      Tachyon and antiparticle difference

   7. Beyond the Standard Model

      Is string theory a deterministic hidden variable theory?

4. Astronomy and Cosmology

   1. Astronomy and Astrophysics

      Synchronous orbits

   2. Cosmology

      WIMP , dark matter

5. Mathematics

   1. General Math

      Proof that a^0 = 1

   2. Calculus

      Evaluating an integral issue

   3. Differential Equations

      Derivation of Lax-Wendroff finite volume scheme

   4. Topology and Analysis

      Understanding the "branch cut argument"

   5. Linear and Abstract Algebra

      Vladimir I. Arnold ODE'S book, about action group

   6. Differential Geometry

      Do Isometries Preserve Covariant Derivatives?

   7. Set Theory, Logic, Probability, Statistics

      Mixing of regatta competitors

   8. MATLAB, Maple, Mathematica, LaTeX, Etc

      Solving eigenvalue problems

6. Engineering

   1. General Engineering

      Structural query on removing a masonry wall and lintels

   2. Mechanical Engineering

      No material, real or in theory can be perfectly rigid

   3. Electrical Engineering

      Measuring small differences in the phase of light

   4. Materials and Chemical Engineering

      Is there a way to increase the efficiency of spdc?

   5. Nuclear Engineering

      Resource(s) for commercial transuranic waste composition?

   6. DIY Projects

      Need help choosing the necessary motor for my first ever DIY project

7. Other Sciences

   1. Chemistry

      In coordinate bond, why doesn't the H^+ atom get a negative charge?

   2. Programming and Computer Science

      Inputting Data into SAS

   3. Biology and Medical

      Making a record of what we feel when we touch something

   4. Computing and Technology

      Odd behavior after accessing Yahoo

   5. Earth

      Did complex animals evolve at deep sea volcanic vents?

8. PF Lounge

   1. General Discussion

      Pearl Harbour -- Aug 2018

   2. Science Fiction and Fantasy Media

      Inertial dampers

   3. Feedback and Announcements

      Paragraphing Latex expressions

   4. New Member Introductions

      Maxwell's Equations versus Newton's Third Law

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