Recent content by SBNY444

The third term group? Are you saying my assumption about that being unit less is incorrect? If so great, we can move on. Can you comment on whether the analytical approach is in fact sound? Thanks again.

Am i going crazy? I was wrong before. It's actually lbs*sqrt(1/T) Anyway, clearly there is something wrong with my excel. And maybe there is something wrong with this equation above. But the million dollar question is, if this is the right approach - assuming my answer agrees with the online...

I didn't ask for you to open the excel. Frankly, I don't think it is relevant at this stage. Someone asked to see my calculations, I presented them. I'm using the first very long equation from the tool i already provided in the excel sheet. I get a much different answer, that's all. Here's a...

its attached. Aside from whether or not the calculation is correct, is it the right approach I think is an equally important question.

anyone?

So, I'm using an online tool: http://www.tlv.com/global/TI/calculator/air-flow-rate-through-orifice.html?advanced=on setting temp to 20C, Primary pressure to 1psig, out pressure to atmospheric (0 psig), diameter 0.75", discharge defaults to 0.7. I get 44.5 scfm. Trying to reproduce this in...

I feel like this is easy to answer but I'm coming up with answers I don't trust. Basically, I have a tank of air where I want to keep the pressure at a certain value. Let's say 1 psig for the sake of argument. I have a 1/2" ID hose connecting to inlet flow to the tank and an outlet hose of 3/4"...

A lot of insulating materials only list the density and K-Factor. Is there a way to obtain thermal conductivity (Watts/[m*C]) so it can be modeled in say finite element program. No software i know of can work with K-Factor. And for a bonus question. can you also calculate the specific heat of a...

Great. Let me take a step further. I have a picture attached that I will refer to. If I impractically vibrated this sphere up and down with respect to your computer screen indicated by the green arrow in the lower left hand corner, would the two theoretical detectors see the same thing in terms...

Yes, this makes sense. I neglected to take this important fact into account. So a moving field and consequently light can be generated simply from a moving charge. Let's imagine for a moment that I have small steel 1 cm diameter sphere and it was charged with some arbitrary amount of coulombs. I...

No, not three charges. I gave the example of a light bulb and an eye; two things. I was imagining the light bulb had some charge and that charge created a field and the quantity of the charge oscillated which caused the strength of the field to change thusly creating light that the eye could...

Charge clearly. (coulombs if you like). a field has field vector lines. These field lines would presumably be different from one observer to the next. This field and also field lines are oscillating in magnitude and direction. Are those field lines oscillating between up and down or forward...

Well what is the electromagnetic field oscillating with respect to? Yes that last question was worded poorly. I'm just trying to understand if it is an electric field, then what quantity (already answered) is oscillating and with respect to what. Two point charges create a field. So in my...

I hear frequently that light is simply an oscillating electric field. But I have problems visualizing this. Mostly because I'm a mech. engr. and I have a tendency to always try to picture something physically in my head to help me understand it. I simply can't do it when I think about light this...

wow, these tools are sweet. Thanks all!