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  1. Derivative of the Volume of a Cone - Physics Forums

    Nov 25, 2007 · The discussion centers on finding the derivative of the volume of a cone, represented by the formula V = (1/3)πr²h. Participants clarify that to compute the derivative, …

  2. What Exactly is Dirac's Delta Function? - Physics Forums

    Aug 29, 2025 · In Dirac's Principles of Quantum Mechanics published in 1930 he introduced a "convenient notation" he referred to as a "delta function" which he treated as a continuum …

  3. What is 'K' in K=1/4pi Epsilon 0? - Physics Forums

    Aug 27, 2011 · The discussion clarifies that 'k' in the equation 1/2mv² = kQq/r represents the Coulomb constant, valued at approximately 8.988 x 10^9 Nm²/C². It is defined as k = 1/4πε₀, …

  4. What researchers think of the Coriolis force - Physics Forums

    Jan 7, 2026 · TL;DR A list of citations from researchers in physics and geosciences of the last decade on what is known and what is incorrect about the Coriolis force.

  5. Successful solid-state battery? • Physics Forums

    Apr 16, 2024 · An interesting article about a new solid-state battery that would have a huge list of positives if the details in the article are true - cheaper to make, able to hold more energy per …

  6. Proof of product rule for gradients - Physics Forums

    Dec 23, 2015 · The discussion centers on the proof of the product rule for gradients involving the del operator (∇) and the dot product of vector fields A and B. It clarifies that while the dot …

  7. Difference between arctan (x) and cot (x) • Physics Forums

    Jul 20, 2009 · The discussion clarifies the distinction between the functions arctan (x) and cot (x). Arctan (x), defined as tan -1 (x), is the inverse function of tan (x), while cot (x) is defined as …

  8. Weight Distribution Across Multiple Support Points (Load on Trailer)

    Nov 30, 2023 · This discussion focuses on calculating load distribution across multiple support points on a trailer deck for heavy objects, specifically addressing scenarios with three or more …

  9. An Intro to AVX-512 Assembly Programming - Physics Forums

    Feb 4, 2019 · Brief history of AVX-512, interesting feature sets, how-to tutorials and an introduction to assembly programming using Intel AVX-512 instructions.

  10. What is the charge on carbonate ion • Physics Forums

    May 6, 2009 · The carbonate ion (CO3^2-) is a polyatomic anion consisting of one carbon atom and three oxygen atoms, carrying a total charge of -2 due to the presence of two additional …