
Velocity of air coming out of a nozzle - Physics Forums
May 31, 2013 · To calculate the speed of air exiting a nozzle from a compressed air tank, the pressure ratio must be considered to determine if the flow is choked, which occurs when the …
Exit velocity of a gas through a hole • Physics Forums
Sep 25, 2016 · The discussion centers on the relationship between the exit velocity of gas and the diameter of a hole in a pressurized container. Initially, it was suggested that the exit velocity …
Relationship between viscosity and velocity in fluid mechanics
Oct 31, 2022 · Viscosity is an intrinsic property of fluids that remains constant regardless of the fluid's velocity, as long as the flow is laminar and the relationship between viscous force and …
How to Determine Velocity from a Force-Time Graph?
Mar 26, 2015 · To determine velocity from a force-time graph, the impulse is calculated as the area under the curve, which is crucial for solving the problem. The impulse-momentum …
What is the significance of sqrt {2gh} ? • Physics Forums
Apr 22, 2010 · The equation v = √ {2gh} is significant in physics as it relates to kinetic energy per mass and appears in various contexts, including escape velocity and conservation of …
How to find angular velocity from torque? • Physics Forums
Sep 6, 2013 · To find angular velocity (ω) from torque (τ), the relationship τ = Iα is used, where I is the moment of inertia and α is angular acceleration. Angular acceleration can be expressed as …
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · Since the phase velocity is linear in k, v p h a s e = ℏ k m, the group velocity is an average of all the phase velocities in the wave pocket. This turns out true in the simplest case …
Average Speed vs. Velocity: Explained • Physics Forums
Jul 9, 2021 · Average speed is defined as the total distance traveled divided by the total time, while average velocity is the change in position divided by the time interval for that change. In …
Can force be expressed as mass flow rate times velocity
Aug 1, 2015 · Force can indeed be expressed as mass flow rate times velocity, particularly in fluid dynamics scenarios like water flowing through a pipe or gas from a spray can. According to …
Why is the Velocity equal to joules per kilogram? - Physics Forums
Feb 8, 2017 · The discussion centers on the relationship between kinetic energy and velocity, specifically why the units of joules per kilogram (J/kg) correspond to the square of velocity. …