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- Derivation of velocity in nth Bohr orbit - Physics Forums
So, I was thinking of using (momentum) mvr=hn 2(pi) which works out to give a nice expression for the velocity, but it fails in the next two parts of the problem I also looked at the equation for the bohr radius: a = hbar^2 ke^2m but again, I'm not sure that this would work with the rest of the problem The Attempt at a Solution
- Vertical circular motion minimum speed proof - Physics Forums
so the body reached the top let's take what happened so far, in reverse now the body has velocity of (rg)^0 5 to the other side, mg is still downward we KNOW the body will complete the half circle reversed motion, because we've just seen it complete it
- 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?
- 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
- How to find the initial velocity given only angle and distance traveled
An object is shot (from a cannon) at an angle of 33 degrees and landed 85 m away Calculate the magnitude of the initial velocity (Hint:Look at the x direction and solve for Vox) Homework Equations Other questions I must answer If you have time, help with these would be great, however I think if I can just find the initial velocity I should be
- Converting velocity to pressure - Physics Forums
Radiologists often use Doppler ultrasound to measure flow velocity change in a blood vessel with a stenosis- but I would like to make a conversion to a pressure differential Equation: P2-P1 = (V2^2 - V1^2) 2 (assuming frictionless system, blood density ~ 1 0 gm cm^3, and no change in height)
- Exit velocity of a gas through a hole - Physics Forums
The exit velocity is determined by the pressure difference between the tank and the environment and also the frictional forces both internal to the fluid and between the fluid and the orifice sides Ignoring frictional forces and assuming a constant pressure, the exit velocity of a fluid is always the same no matter how big the orifice diameter is
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