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...
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 …
Why Is Initial Velocity Not Always Zero? • Physics Forums
Aug 9, 2021 · The discussion clarifies that the initial velocity of an object is not always zero, particularly when considering the moment it leaves the thrower's hand. The term "initial velocity" is defined as …