1. Homework Help

   1. Introductory Physics Homework

      Circular motion - ball in a loop

   2. Advanced Physics Homework

      Partition Function for N Quantum Oscillators

   3. Precalculus Mathematics Homework

      Are two coincident lines the same line?

   4. Calculus and Beyond Homework

      GR Cone Singularity

   5. Biology, Chemistry and Earth Homework

      Hydrodistillation and (original) uses

   6. Engineering and Computer Science Homework

      Derive lowest order (linear) approximation

2. Science Education and Careers

   1. Science and Math Textbooks

      Ask the Advisors: What's Your Most Memorable Textbook? - Comments

   2. Academic Guidance

      How is medical physics compared to other fields of physics?

   3. Educators and Teaching

      Equations: whiteboard vs slides

   4. Career Guidance

      PhD rankings and employment

3. Physics

   1. General Physics

      Force required for small blower motor.

   2. Classical Physics

      Ring or the shell in Bremsstrahlung?

   3. Quantum Physics

      Measurement problems?

   4. Special and General Relativity

      Non inertial frames in SR?

   5. Atomic and Condensed Matter

      A question about antiferromagnetism in an external B field

   6. High Energy, Nuclear, Particle Physics

      Peskin Schroeder page 14

   7. Beyond the Standard Model

      Information encoding in the Holographic principle

4. Astronomy and Cosmology

   1. Astronomy and Astrophysics

      Energy Transport in Stars

   2. Cosmology

      How does one actually compute a correlation function?

5. Mathematics

   1. General Math

      Beltrami flows have zero parallel gradients?

   2. Calculus

      How to Convert a Complex Logarithm to a Complex Exponential

   3. Differential Equations

      What does this line mean?

   4. Topology and Analysis

      Compact subspace in metric space

   5. Linear and Abstract Algebra

      Eigenproblem for non-normal matrix

   6. Differential Geometry

      What is the covariant derivative of the position vector?

   7. Set Theory, Logic, Probability, Statistics

      Propagation of Error when Taking the Average of Averages

   8. MATLAB, Maple, Mathematica, LaTeX, Etc

      Complex output from a real integral

6. Engineering

   1. General Engineering

      Wind Turbine Hydraulic to Electrical Conversion

   2. Mechanical Engineering

      Ultrasonic Welding

   3. Electrical Engineering

      relevant highest order harmonics in power systems

   4. Materials and Chemical Engineering

      Material testing machine

   5. Nuclear Engineering

      I want to learn how to do burn up calculations for reactor

7. Other Sciences

   1. Chemistry

      How can I test the ph of foods

   2. Programming and Computer Science

      Neural Nets in AI

   3. Biology and Medical

      is Mutation related to quantum jump?

   4. Computing and Technology

      How to hook up my PC to my TV

   5. Earth

      About atmospheric remote sensors

8. PF Lounge

   1. General Discussion

      Random Thoughts part 6

   2. Science Fiction and Fantasy Media

      Sci Fi immortal movies

   3. Feedback and Announcements

      PF Betterment Survey Staff Responses

   4. New Member Introductions

      Transcending Relativism

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