
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 …
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · 20 TL;DR The relation between the concept and formula for group velocity As far as I know, if we have a wave function as a sum of many momentum eigen function, i.e., …
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 acceleration). Could anyone …
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...
Exit velocity of a gas through a hole - Physics Forums
Sep 25, 2016 · Hello, Given: A large pressurized container with a small hole in a side. The sides of the container are VERY thin such that the thickness of the sides can be ignored. The …
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 …
How to find angular velocity from torque? • Physics Forums
Sep 6, 2013 · Hello, If I apply force on a rigid cube, I can find the torque τ as: τ = F x r Now, from torque τ I can know about the axis of rotation but how much should I rotate the cube. How can …
Vinyl records, RPMs, and velocity. How does it work?
Jan 17, 2012 · Vinyl records, RPMs, and velocity. How does it work? WaterAndSand Jan 17, 2012 Velocity Work Click For Summary
How to find the equation for the maximum velocity possible
Feb 13, 2017 · Homework Statement When an object is moving in a vertical circle attached to a string, it can withhold a maximum tension at the bottom of it's path. Derive an expression for …
Can you have a negative average velocity? • Physics Forums
Sep 3, 2012 · I understand that it's possible to have a negative instantaneous velocity, but I'm wondering if it's possible to have an negative average velocity. For example, let's say you start …