Q2: The m(t) message is modulated as s(t)=2(1+0.2m(t))cos(2pi5*10^5t). For which messages the envelope is broken? 2 mi(t) ma(t) = 7sin(2x700) ma(t) 2 1 1.1 2.5 3 -12 Q3: Find the coefficient of modulation (u) for m(t) signals which is given in the secon question. Q4: Is the s(t)=2cos(800pit) cos(10^7pit) signal occupied how many hertz spectrum in the communication band? Q5: Define the type of modulation the signal which is given in the question 5. Draw the block diagram of the demodulation system that will demodulate the s(t) and explain its working principles.