1. Homework Help

   1. Introductory Physics Homework

      Nuclear Probability Question

   2. Advanced Physics Homework

      Renormalization in Two Dimensions

   3. Precalculus Mathematics Homework

      Write out the following set by listing their elements..

   4. Calculus and Beyond Homework

      Convert to a first order ODE

   5. Biology, Chemistry and Earth Homework

      Mole Concept

   6. Engineering and Computer Science Homework

      K-Map issue

2. Science Education and Careers

   1. Science and Math Textbooks

      STEM Bibles List

   2. Academic Guidance

      How did you pick a major?

   3. Educators and Teaching

      Teaching Economics Without Calculus

   4. Career Guidance

      Careers in Nuclear Physics

3. Physics

   1. General Physics

      Cannot find the Temperature Change inside of a Tank

   2. Classical Physics

      Help getting started with numerical solution

   3. Quantum Physics

      Maxwell's equations and QFT

   4. Special and General Relativity

      Relativity and speed of light basics

   5. Atomic and Condensed Matter

      Bloch theorem proof with V(x)=V(x+ma)

   6. High Energy, Nuclear, Particle Physics

      Why is Carbon-14 Unstable?

   7. Beyond the Standard Model

      Summing not over configurations, but over theories

4. Astronomy and Cosmology

   1. Astronomy and Astrophysics

      Earth's twin planet

   2. Cosmology

      Threshold of gravitational pull over dark energy

5. Mathematics

   1. General Math

      Finding Radius from chord length and tangent distance

   2. Calculus

      arctan convergence rate

   3. Differential Equations

      Interval of the maximum solution of a non-linear equation

   4. Topology and Analysis

      Does the Integral of Riemman Zeta Function have a meaning?

   5. Linear and Abstract Algebra

      A decreasing sequence of images of an endomorphisme

   6. Differential Geometry

      Surface Metric Computation

   7. Set Theory, Logic, Probability, Statistics

      Autocorrelation Error Interpretation

   8. MATLAB, Maple, Mathematica, LaTeX, Etc

      A second order PDE

6. Engineering

   1. General Engineering

      Rotordynamics: unbalance loads due to displacement - FEA

   2. Mechanical Engineering

      How is static torque calculated for constant speed?

   3. Electrical Engineering

      What is the direction of electric field inside a battery?

   4. Materials and Chemical Engineering

      CMF bulletproof body armor

   5. Nuclear Engineering

      Critical mass for nuclear fusion

   6. DIY Projects

      Rewinding old 3-phase stator: Non-symmetrical layout

7. Other Sciences

   1. Chemistry

      Difference between cast iron and high carbon steel?

   2. Programming and Computer Science

      Challenges for artificial intelligence

   3. Biology and Medical

      Doctor Investigates Childhood Leukemia Causes

   4. Computing and Technology

      Windows 10 made a brick out of my laptop

   5. Earth

      Hawaii's Kilauea volcano eruption

8. PF Lounge

   1. General Discussion

      Random Thoughts part 6

   2. Science Fiction and Fantasy Media

      Will Star Trek Teleportation ever be possible?

   3. Feedback and Announcements

      "Mute" pointer to avoid pop-ups

   4. New Member Introductions

      Rehan Ahmed-High School Physics Teacher

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