Communication Systems

The above figure shows a cross-over network in a loud speaker system. One branch consists of a capacitor $$C$$ and a resistor $$R$$ in series $$($$the tweeter$$).$$ This branch is in parallel with a second branch $$($$The woofer$$)$$ that consists of an. inductor $$L$$ and a resistor $$R$$ in series. The same source voltage with angular frequency $$\omega ($$from an amplifier$$)$$ is applied across each parallel branch. 
The radio altimeter on an aircraft is a
An amplifier is required in the process of detection of a signal because:
Full motion video requires an enormous bandwidth of 12 Mbps. true=1, false = 0
When m = 1, power carried by side bands is: