# Recent content by bibo_dvd

1. ### Torque on a Triangular Loop

hello guys iam doing my homework in magnetic fields course and i found this problem i solved (a) and (b) by using F=I L x B and the total force on the triangular loop would be zero but in (c) i tried alot to find the torque on the loop but i couldn't get the same result so please help me...
2. ### Periodic Complex exponential signal

omg , now i understand , we need cos(wT) to be always 1 , so cos (2*pi) and (4*pi) and so on , yaaaayyyyy :D Thx man for help :)
3. ### Periodic Complex exponential signal

okay , i know Euler's formula but i can't understand " wt=m*2*pi " or "T=m*(2pi/w) m=positive integer" how did this part was given ??
4. ### Periodic Complex exponential signal

hello guys .. first of all , iam not sure that i should type this thread here . so excuse me for that in this problem i can understand the part untill it's said that w=0 then x(t)=1, which is periodic for any value of T but i can't understand the part after that in the case of w is not equal...
5. ### Problem with electric flux density

hello guys :) i need your help with this problem i can understand that in (a) we will use the integral of row(v) * dv to get the charge and in (b) we will use the formule D(r)=Q/[4*PI*r^2] but in (C) should it be zero or what ?? and if it should be zero why in the solution manual it...
6. ### Problem with Vector Field

Hello guys !! i have this problems while solving problems on vector calculus .. i solved (a) , (b) as i put P(2,4,3) in the formula of S and i solved it and i solved (b) as a(S)= S/lSl but in (c) i don't how what should i do to solve it ..please help me guys ..Thank you
7. ### Engineering [Help] with Numbering System Digital Circuit

Hahahah ..i think ..it depends on the base we are using , Berkeman :biggrin:
8. ### Engineering [Help] with Numbering System Digital Circuit

This was the first chapter of Digital Circuits ..an Introduction for binary and other numbering systems ...this was the first section of the course :D and if 3 * 6 = 22 then 3 * 6 = 2+2x then base = 8 :))
9. ### Engineering [Help] with Numbering System Digital Circuit

[Help] with Numbering System "Digital Circuit" Hello Guys .. iam having an exam on digital circuits and i try to work on some problems about numbering systems and i found this problems but i couldn't solve it .. i said that (x-3)(x-6)=x^2-11x+22 then i said that...
10. ### [help] finding the total electric flux

hmmm , this means that i will integrate r^2 sin(ceta) *d(ceta)*d(phi) ??
11. ### [help] finding the total electric flux

Hello Guys !!! iam studing the electric flux and how the relationship between D ( electric flux density ) and E ( elecric field) but i found this problem and i don't know which formula should i use to solve it to find the electric flux i know that Q=(Psi)=the electric flux but i...
12. ### [Help] in the integration of electric field

the problem is that iam not very good at integration :( and i don't know from where should i start ..i mean which book or tutorial should i start with to help me with this type of examples ?? :)
13. ### [Help] in the integration of electric field

Hello guys !! :) i need your help in the integration which is used to calculate the total charge in the electric field in a continuous volume charge distribution in this example i can't understand how the integration was done ..so please help me with this :) The example ...
14. ### Regulated power supply circuit

hello guys ... i want to design this circuit on proteus and print it to put it on a board this is a regulated power supply circuit the problem is that iam a beginner in proteus ...so can anyone help me how to start ? The Circuit : please help me guys with this ..Thanks :)
15. ### A problem with diode limitters

you mean that the output waveform will equal zero in the positive half and in the negative half it will equal -10v-0.7v ?? or what ??