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  1. 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 …

  2. 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 …

  3. 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 …

  4. How to find velocity given coefficient of friction, distance, mass …

    May 13, 2009 · Homework Statement calculate the final velocity of an object sliding across a surface with a coefficient of friction of 0.2, a distance of 3m, an initial velocity of 50m/s and the …

  5. 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 …

  6. Relation Between Spring Constant and Angular Velocity

    Nov 17, 2015 · The discussion focuses on the relationship between the spring constant (k), mass (m), and angular velocity (ω) in the context of periodic motion. The equation k/m = ω² is …

  7. 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 …

  8. 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 …

  9. 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 …

  10. Can you have a negative average velocity? • Physics Forums

    Sep 3, 2012 · Negative average velocity is possible when considering displacement in a defined directional context. For example, if an object moves north and then south, its average velocity …