Relationship between viscosity and velocity in fluid mechanics
Oct 31, 2022 · The relationship between viscosity and velocity in fluid mechanics is clarified: viscosity is an intrinsic property of a fluid that remains constant regardless of the flow velocity. The viscous force, …
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · As far as I know, if we have a wave function as a sum of many momentum eigen function, i.e., ψ = ∑ k α k e i (k x ω t), the group velocity is the velocity of the whole wave function while phase …
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 …
Calculating Nozzle Flow Rate To work out the flow rate of water from a nozzle we need to work out the volume in a given period of time. To do this we work out the area of the nozzle and then multiply it by …
Average Speed vs. Velocity: Explained - Physics Forums
Jul 9, 2021 · Investigate the relationship between speed, velocity, and acceleration in motion analysis Students of physics, mathematicians, and educators seeking a deeper understanding of motion …
Understanding Zero Velocity and Non-Zero Acceleration: Explained
Aug 1, 2009 · I heard it would be possible to have zero velocity & non zero acceleration (I know the opposite situation where there is velocity (constant), but zero...
How Long Does It Take a Person to Reach Terminal Velocity?
Apr 20, 2014 · This discussion focuses on estimating the time it takes for a person to reach terminal velocity while falling in Earth's gravitational field, considering factors such as body orientation and air …
Can you have a negative average velocity? • Physics Forums
Sep 3, 2012 · Negative average velocity is achievable in a multi-dimensional context, particularly when considering directional movement. For instance, if a vehicle travels north at 10 mph for one hour and …
Difference between rotational and angular velocity
Sep 26, 2003 · The discussion clarifies the distinction between rotational velocity and angular velocity. Angular velocity is defined as the rate of change of angle over time, measured in radians per second, …
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 …