
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 …
Derivation of velocity in nth Bohr orbit • Physics Forums
Mar 17, 2011 · The discussion focuses on deriving the expression for an electron's speed in the nth Bohr orbit and proving that the highest speed occurs in the n = 1 orbit, with a specific …
Phase and group velocity for the wave function - Physics Forums
Jul 20, 2025 · Since the phase velocity is linear in , , the group velocity is an average of all the phase velocities in the wave pocket. This turns out true in the simplest case which wave …
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 …
Is velocity ever a scalar quantity? • Physics Forums
Dec 27, 2024 · Velocity is fundamentally a vector quantity, possessing both magnitude and direction, while speed is a scalar representing only magnitude. In the context of the SUVAT …
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 …
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 …
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 …
Reducing Water Velocity Without Reducing Flow: Finding the …
Mar 20, 2010 · The discussion focuses on the challenge of reducing water velocity while maintaining a flow rate of 50L/s through a 2-inch orifice connected to a 4-inch pipe. High …
How to find the initial velocity given only angle and distance …
Sep 19, 2010 · To find the initial velocity of an object launched at a 33-degree angle that lands 85 meters away, the correct formula is range = v0^2 * sin (2θ) / g. The calculated initial velocity is …