Week 5 Networking

b. Why are audio signals not transmitted directly by electromagnetic waves?

So the question becomes, how much of a contribution do solar cells make to GPS?

communication sys answer A and B

How did you calculate the angles of IL,Ic,Ir & It?

Which type of materials are usually used in optoelectronic devices that produce electrical signals upon interactions with EM waves?   super-conductors semi-conductors electrical conductors electronic conductors

A 2 V signal is incident to the interface from a 75 Ohm region propagating to a 50 Ohm impedance region. What is the reflection coefficient? What is value of the incident, reflected and transmitted wave? What voltage would you measure on either side of the interface right after the signal goes through the interface. For the interface, I'm a little confused. I used a voltage divider and got V_transmitted = 0.8 and V_incident = 1.2. But shouldn't they be the same?