Whats the name of that tool that

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The discussion centers around identifying a tool used for transferring liquids, specifically one with a rubber bulb and a calibrated glass cylinder. Initially, a user suggests it might be a pipette, but later confirms it is an eye dropper. The conversation highlights the importance of precise terminology in science classes, particularly in chemistry. Users express appreciation for their teacher's flexible approach to rounding in tests. The thread concludes with a light-hearted farewell.
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whats the name of that tool that ...

Whats the name the tool that has a rubber bulb at the top and glass cyilinder atached. When you squeeze the rubber and insert in water and release, it sucks up the water and you can move the water somewhere and squeeze the rubber again to release water. Also has messerements callibrated in mL. What is that called I forgot. And yet Iam dooing well in science courses :smile:
 
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Pipette? ...
 
Well I searched it and I got it. Its an eye dropper. Thanks.
 
A pipette is kind of a detachable eye dropper by the way hehe
 
Yeah, my teacher is strict on the names of these things. I like my chemistry teacher, on the tests he doesn't care about rounding much unless he tells to use proper rounding. This, this is even worse lol.

Good night :happy:
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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