Recent content by error404

Hi all, I have a dataset of 3 continuous variables and 1 binary (YES/NO) variable, I am trying to establish a model for prediction of future similar results using logistic regression. I used some software packages and the results are awesome. I would like to know if it is possible to know...

Thanks for replies everyone. As i can understand from the replies above... A 100% vacuum has a dielectric constant almost the same as air, but prevents the formation of a spark like...a 100 times more? Note: my question might sound very silly but i am not an expert in the field of electrical...

Berkeman, thanks for your reply. I can understand from this figure that either at very low pressure or at very high pressure, we need a HUGE voltage to make a spark, is that correct? Haxo489, thanks for your clear answer. however, i am wondering how much vacuum we could actually achieve in...

Hey guys, I was looking online at sparks and how they form, and the amount of energy needed to form them when this question came up to my mind. can a spark form through vacuum? or it actually needs particles to go through them? and if it can form...what is the value of the breakthrough for...

utkarsh1, thanks for replying me. regarding the first question, i can understand the concept behind the generation of the spark itself, but i still cannot find a rule that can give me straight numbers for this. i mean let's assume a distance of 1 meter, between 2 point charges, with air or...

hello folks, Actually I'm not an engineer, but i have a couple of questions regarding electricity and i hope i am posting this in the right forum :) 1- when there's a charged object, that comes close to another object, a spark tends to happen between them, so that the charged body emptys...

Mechanical Simulation Programs?? Hello i would like to know what is the best program for mechanical simulation, and the easiest one to learn and get used to (price doesn't really matter for now) the systems i want to test contain gears, springs, cranes and some pulleys all are simple...

yet...more electrical attraction :) hello everyone i posted a question erleair about electrical attraction, and the answers were really helpful, i hope i can help me with this too here's the situation, i have a circiut with a battery of 100 volts and a capacitor having "100 Micro farad, 100...

Bob S, uart, sophiecentaur Thanks for helping me with this, I've been searching for the perfect answer for a really long time, now things are much more clear for me :) Error404

well, if u calculate the attraction force according to coulomb's law which is approx. true, u'll have an attraction force of 8.1X10^8, the highest relative static permettivity known according to this table is 100000, even if it was used as insulator between the 2 plates, still...u will have a...

ok fine, i got that...but...can i ask u something (forget about ALL previous questions)? if i get a capacitor with "10 micro Farad capacitace" and connect it to a battery with "30 Volts", this would give me the 3e-4 charge on each, the space between the 2 plates now is around 1 mm, if u...

thanks for replying mt Bob S, Berkeman Bob S: I'm not sure what voltage u're talking about in the second step i didnt know what to use to replace the "V" in the stored energy rule Berkeman: i used coulomb's law of attraction, and the result wasnt logical, the result is 8 X 10^2 which...

hello engineers i have a question about electrical attraction... i if had 2 plates, each of area 5cm2, one of them holding the charge of 3x10-4 coulomb and the other holding the same but negative charge (-3x10-4 coulomb), and the distance between the 2 plates was 1 meter, how can i find the...