A signal is to be transmitted along a cable system of total length 
. The cable has an attenuation of 
. Amplifiers, each having a gain of 
, are placed at 
intervals along the cable, as illustrated in the figure below.
State what is meant by the attenuation of a signal.
Calculate
the total attenuation caused by the transmission of the signal along the cable,
the total signal gain as a result of amplification by all of the amplifiers along the cable.
The input signal has a power of 
. Use your answers in (b) to calculate the output power of the signal as it leaves the cable system.
.
.
.
