2. A 13 cm section of a lossless coaxial cable which has characteristic impendence of 75Ω is open-circuited at one end. At 900MHz, what is the impedance looking into the end opposite the open circuit termination. Assume a velocity factor of 2c/3. Recall that the input impedance seen looking into the source end of a open circuited transmission line is Zin =−jZ0Cot(βl)