Find the resistivity of a wire 2m long with resistance 70ohms and section 1.5cm in diameter.

my project is making a small telephone exchange have 5 lines , 4 lines for 4 local telephone extensions , 1 line go through to general network ! I need any document about this topic , diagram , blo

i just got my midterm back. I need help to get the correct answer with all the steps so i can study for the finals

2. H&H problem 9.2 p614. Design a 2-digit BCD D/A converter. Assume that the digital inputs are zero or +1 volt; the output should go from zero to 9.9 volts.

A television station is considering the sale of promotional dvds. It can have the dvds produced by one of two suppliers. Supplier A will charge the station a set-up fee of $1200 plus $2 for each dvd

find the equivalent inductance seen at terminals A-B in the figure P7.28.

Part a) Consider the following binary function F(a, b, c, d) = b’cd + abd + ac + a’b’d + a’cd’ For each implicant in F, indicate its reducibility. Perform the Expand operation on F(a, b, c) = E(0

i need solution of problems : 7.14 ; 7.19 ; 7.7 in chapter 7 of the text book : Digital Signal Processing Using MATLAB v4 by Vinay K. Ingle, John G. Proakis . link download : http://www.mediafire.co

Solve the following difference equation using Z-transforms. a.) y(k) + 3y(k 1) + 2y(k 2) = x(k 1) + 3x(k 2) Given x(k) = u(k) and y(-1) = 1, y(-2) = 2 b.) y(k +1) y(k) = k^2 ; y(0) = 1

please answer the prolem on attach assignment ( course ECE171)