Recent content by alphaomega@ho

oke thank you ! always round up or 3.45 => 3 ?

someone, please ?

anyway can help me ?

hello, i am doing gear calculations my problem: i get several point numbers for the module of the spur gear din 780 suggest a standard table with modules so i just have to wrap up my calculated modules, for example: 3.91 => 4 ? thank you vm !

something like the picture for example? that I do understand, but for a non homogeneous dq/dA over the outer surface I find it very strange but I'll except it... thank you

is my statement that I made above correct ? thank you !

hey, I did find out the two materials: steel (in general) and polyester (PE) I have to know the friction because I want to know the power losses when I want to drive this PE belt across a serie of troughing idler( those supporte the belt when there weight on it) thank for the help!

and how can I determine those numbers, I just want an average value for the friction thank you

hello, I 'd like to know the static/kinetical friction coefficient between rubber- steel (the most commonly used), I searched the internet but whithout succes the application is: a conveyor belt that makes contact with a troughing roller) anyone can help me ? thank you !

I mean that dq/dA must be equal over the outer surface suppose all the charge q is spread out over 1/100 of the outer surface somewhere, in the inside of the object will be an netto electric field there's no other charge which creates a internal field opposits to the other dE creates by the...

so the conclusion: a hollow object (no matter what shape) with a equally divided charged surface(dq/dA is overall the same) has a electric field inside that has a netto value = 0 thank you very much

what do you mean with net-uncharged ? I find it difficult to understand why in a non regular onbject the field whtin is zero I've seen the disctraction for the a hollow sphere, with those space angle whom causes opposite field vector in this field (reason why the field is zero) => but in a non...

hello, I have a very simple question: a hollow sphere has the propertie that in the sphere the electric field, due to being charged , is zero is it in the whole sphere? for example, near the inside surface of the sphere, the the electric field of the nearest charge will be geater than the...

not exactly, I understand the priciples but inmy course there aren't a lot of excersises so... thank anyway

thank you for the replies, I think I understand it now do you have also a couple of good examples/excersis about law of Kirchhoff/supersposition/star-delta transformation/thevenin - norton equivalence thank a lot !