Recent content by erobz

In a real system with viscous losses I wouldn’t be able to tell until I had some real system/fluid properties to fiddle with computationally.

This system has a static pressure pre charge of 200 kPa. Turning on the pump will accelerate flow through the pump via pressure differential across it until the viscous losses in the loop grow to match the differential. It’s more complicated than this considering the actual response of the...

See my latest reply to @haruspex. Post in thread 'Bernoulli vs real life experiment' https://www.physicsforums.com/threads/bernoulli-vs-real-life-experiment.1083214/post-7291159 Given the thread title there is much to unpack.

In my opinion “the system” must be precisely tuned to achieve relative vacuum in the contraction. For instance, If it’s jetting to atmosphere at that point, it won’t achieve relative vacuum. If there is a static head keeping water column in the system before the pump is on than in any real...

a) how is pressure being applied if the pump is off? b) ##v_1## appears out of thin air, where did you get it? I’d like to explore what you think the entire system is for a bit. Then maybe the computation you could elaborate on. See latex guide for the mathematics formatting here...

They are bone, so pretty sure they sink and are relatively impermeable over the short timescales needed to make the measurement.

This will be a quick duration dip (done slowly as not to make waves), it won't be soaking. Just enough time for the water level to settle. But thanks for the tip about the air bubbles. Before we get to scientific/precise, take a look at the Boone and Crockett system of scoring...

Thank you, that technique would make precision adjustable. Also, this measures the volume directly; skipping a computation step and minimizes propagated error. Way to think outside the box! (fishtank)

My idea is that I want to use immerse Whitetail Antlers in a fishtank to measure their volumetric displacement (the Boone and Crockett system is the current record measurement standard to place in a juxtaposition with) I would use some sight glass plumbed into the side of the tank to get the...

You know what. Never mind. When I try to solve problems anymore, I get an almost nauseated with trembling anxiety, hyperactivity... It's very off-putting emotional response. Strange, perhaps unbelievable...I know. So just forget I asked. I tried problem solving after a good break from this...

Well the liquid mass in the buggy must be accelerated from u to v inside the buggy? So it feels like an inelastic collision should be relevant like @PeroK mentioned, but when I try to apply the equations I'm getting some uglier...but not unsolvable ODE. Is what I'm doing the common mis...

I'm trying to work this out from a Fluid Mechanics perspective with the Momentum Equation and Mass Conservation: $$ \sum \boldsymbol{F} = \frac{ d}{dt} \int_{cv} \rho \boldsymbol{v} d V\llap{-} + \int_{cs} \boldsymbol{v}\rho ( \boldsymbol {V}\cdot d \boldsymbol{A} ) \tag{Momentum}$$ ##...

You are saying I'm an AI sycophant...meaning my proof is not sound and I'm being led? So did I, and I questioned the priest publicly... But I feel the route I took here has logical potential to "put it to bed". So in otherwards, most people believe in an eternal hell...

While we are on the is "ChatGPT driving people insane", is it placating me with a proof for the impossibility of a Christian heaven outside of a complete lack of consciousness (the void - absolute nothingness). Did I actually come up with something that has some avenues to pursue, or is there a...

I’m not so sure. I think they are on to something. Perhaps gen Z no longer wants to keep playing the game. What truly is the point? What is the purpose? This is my take on the human experience…I didn’t make the video…so before you say “I’m" strange… If the short isn't enough to get the idea...