Relationship between viscosity and velocity in fluid mechanics
Oct 31, 2022 · The discussion centers around the relationship between viscosity and velocity in fluid mechanics, particularly in the context of laminar and turbulent flow. Participants explore whether …
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · Since the phase velocity is linear in , , the group velocity is an average of all the phase velocities in the wave pocket. This turns out true in the simplest case which wave pocket contains …
Derivation of velocity in nth Bohr orbit • Physics Forums
Mar 17, 2011 · The discussion focuses on deriving the expression for the electron's speed in the nth Bohr orbit, specifically addressing parts (a), (b), and (c) of a homework problem. The key equations …
Is velocity ever a scalar quantity? - Physics Forums
Dec 27, 2024 · I thought velocity was always a vector quantity, one with both magnitude and direction. When it came to the suvat equations, where v = final velocity, and u = initial velocity, I thought both of …
Velocity of an Object Dropped from Height: Law Explained
May 5, 2005 · The discussion clarifies that the velocity of an object dropped from a height positively correlates with the height due to the Law of Conservation of Energy. As an object falls, its potential …
At What Velocity Does the Universe Expand and Can It Be Faster than …
Feb 9, 2016 · You may sometimes see statements that cosmological inflation caused the universe to expand faster than c, or that the edge of the observable universe occurs at the place where the …
Understanding Zero Velocity and Non-Zero Acceleration: Explained
Aug 1, 2009 · The discussion centers on the concept of having zero velocity while experiencing non-zero acceleration, exploring various scenarios and interpretations within the context of physics.
Numerade
Confusing speed with velocity, neglecting the directional component of velocity. Overlooking that deceleration is still a form of acceleration (negative acceleration). Failing to correctly apply the vector …
Addition of Velocities (Velocity Composition) in Special Relativity
May 20, 2024 · The “Addition of Velocities” formula (more correctly, the “Composition of Velocities” formula) in Special Relativity v A C c = v A B c + v B C c 1 + v A B c v B C c is a non-intuitive result …
Why is the Velocity equal to joules per kilogram? - Physics Forums
Feb 8, 2017 · The discussion revolves around understanding the relationship between kinetic energy, velocity, and their respective units, specifically focusing on why the units of Joules per kilogram …