
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, …
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 …
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, …
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.
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 …
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 …
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 …
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 …
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.
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 …