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- Calculating Nozzle Flow Rate - Physics Forums
for measuring velocity of water so we have to calculate velocity using head calculation or from stagnation pressure which we measure using a pitot tube Calculate Velocity from Head We can use Bernoulli's Equation to calculate velocity of a fluid from head Head is the distance from outlet to top of water V= 2gh V = Velocity m sec or feet per sec
- Finding Velocity given x and y velocities - Physics Forums
1 How do you find the velocity of an object if you are given the x and y components of the velocity? 2 Not sure! 3 It makes the most sense to use the Pythagorean Theorem to find the magnitude then trig to find the angle, but I've got a classmate telling me you simply add together the x and y components Which is it?
- Understanding Zero Velocity and Non-Zero Acceleration: Explained
The problem here is that you have a fundamental misunderstanding of what acceleration means in relation to velocity Consider a curve of velocity vs time At some time, t, the instantaneous velocity is zero The acceleration is the slope of the velocity curve at time t You are confusing a value on a curve with its slope
- Find Velocity given Force and Mass - Physics Forums
where v is the final velocity, a is the (average) acceleration and t is the time the body accelerates This is a pretty intuitive formula if you think a little bit about it The acceleration is unknown, but you can express it in terms of F and m (since you know that [tex]F=ma[ tex]) Combining these gives [tex]v_{final}=\frac{F}{m} t[ tex]
- Velocity of Fluid flow due to gravity - Physics Forums
For our purposes, in this project we are assuming the height in the tank is constant, as you said This will ensure a constant pressure at the bottom of the tank, in theory keeping the flow of water constant I originally thought I could use the kinematic equations of physics to solve for the velocity after free falling a certain distance "h"
- Question on Diracs derivatives of the 4-velocity w. r. t. coordinates
In Dirac's "General Theory of Relativity", he shows how in the weak field, low-speed limit, Einstein's equation gives Newtonian gravity Along the way, he takes derivatives of the spatial components of the 4-velocity ##v^m = dx^m ds## with respect to the coordinates ##x^r## and ##x^0=t## Of
- Demystifying the Often Misunderstood Bernoullis Equation - Physics Forums
As a sanity check, we can perform a thought experiment based on a force balance (momentum conservation) If the velocity increases from point 1 to point 2, then that acceleration must be the result of a force in the same direction Bernoulli’s equation tells us that the velocity increase corresponds to a decrease in pressure
- How Is the Formula v=wr Derived in Vector Terms? - Physics Forums
The angular velocity ω is usually a scalar, rather than a vector quantity The magnitude of the radial velocity is given as v = ω r, where r is the magnitude of the radius vector For a derivation of the radial velocity vector, see this article:
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