
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 …
Solving for distance using only initial velocity and coefficient of ...
Nov 24, 2008 · Actually, althought relating the Kinetic Energy equation to the equation about friction and distance might be conceptually valid, it isn't the clue this person needed. At the …
How Do You Calculate Closing Velocities and Determine Their …
Aug 28, 2016 · If I'm not mistaken, the closing velocity is the velocity that the planes get closer to each other. And the closing speed is its magnitude, that is, the rate of change of the distance …
Average Speed vs. Velocity: Explained - Physics Forums
Jul 9, 2021 · Though average speed over a finite interval of time is greater or equal to the magnitude of the average velocity, Instantaneous speed at an instant is equal to the …
Air flow through a 90 degree bend - Physics Forums
Sep 18, 2007 · Fluid flows at different velocities within a pipe’s cross-section. For well-developed, ideal flow, the fluid velocities will be highest near a pipe’s center, decreasing towards the pipe …
What is the significance of sqrt {2gh} - Physics Forums
Apr 22, 2010 · Hi, I'm not sure how to word my question, so I will just state it upfront. What is the importance of \\upsilon = \\sqrt{2gh} in physics? I've seen it in escape velocity problems, …
Why does fluid flow faster in a narrow tube? - Physics Forums
Jul 14, 2013 · Some context would be helpful. If you have a fluid going from a large pipe to a narrow pipe (or vice versa), the fluid has to flow quicker in the narrow pipe to get the same …
Question on Dirac's derivatives of the 4-velocity w.r.t. coordinates
Jun 21, 2025 · As I said in #40, we can have a family of geodesics such that each has constant and a velocity . My original central geodesic is the same, , and the geodesics don't intersect. …
Understanding Zero Velocity and Non-Zero Acceleration: Explained
Aug 1, 2009 · I heard it would be possible to have zero instantanous velocity & non zero acceleration (I know the opposite situation where there is velocity (constant), but zero …
Question on Dirac's derivatives of the 4-velocity w.r.t. coordinates
Jun 6, 2025 · Along the way, he takes derivatives of the spatial components of the 4-velocity with respect to the coordinates and . Of course, is a vector field in spacetime, so these should be …