Recent content by Vanadium

Well, here's how I'd solve it, with fair precision: Propane (C3H8) is ~44.1 g/mol (you can look it up to the desired accuracy) A mole of most gases at Standard Temperature/Pressure (1atm, 0 C) occupies ~22.4 L Therefore, 1 g of propane gas @ STP occupies .508 L. Dividing by the density of...

If I'm reading this right, vk6kro seemed to be hinting that you need the capacitor in parallel with the load, not in series. I'd agree with him. The capacitor is a filter. Put it *between* the V+ and return line, and it blocks DC from shorting to ground, but allows the ac component to bleed to...

Yes, this is the standard industry practice.

Your forgetting the limited range of torsion of the wrist, which otherwise has to do an (time-) wasting backstroke -- likely up to 4 of them per rotation of the screw. Don't get me wrong, I just saw the ad for the first time Friday morning, and while I thought it was nifty, I felt the...

With the "traditional connecting rod", you get one rotation of the driven wheel per full cycle, but with the sun-and-planet gears pictured, you get 2 rotations per push-pull cycle. This point is easy to overlook because a pivot (as in the traditional rod) appears to be doing substantially the...

I doubt a high school class is using Analytic Grade reagents. The zinc is likely technical grade or even 95%. Likewise the copper bridge may be home wiring, etc. (<99% pure) I agree that it would be enlightening to measure each half-cell, relative to the copper bridge (ideally with the other...

I think you may be underestimating the cost and expertise required to set up a glass tubing production line, as well as the volume required to break even. I've never seen a facility *other* than a glass factory that produced its own tubing, but I've seen a lot of factories, large multi-lab...

Well, I don't want to confuse you, but the electrons don't actually "flow". That's just a convenient mental model. In actuality, each electron nudges nearby electrons with its electric field, and the *effect* is similar to one electron entering one end of a wire nudging one electron out the far...