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Radio Frequency (RF) signals propagate as an electromagnetic (EM) wave.  Optical signals behave as both a wave and as a particle as it propagates.  Although optical waves possess this “wave-particle duality”, they are still considered EM waves.

Identify the device that combines multiple time slots or frequency channels into an aggregate for transmission.

A telephone is an example of:

Select the correct statement(s) regarding electrical and electromagnetic (EM) information/signal waves. 

Given the following parameters, determine the correct sinusoidal equation for a sine wave:  f=1kHz, A=2v, φ (phase angle)= -π radians.   

In unguided medium (free space), the electromagnetic (EM) signal wave spreads as it leaves the transmit antenna.  Since the power of the EM signal resides at the surface area of the wave front, signal power is described as signal power density (i.e., watts per area). As the signal propagates away from the transmitter, power density decreases, and attenuation is experienced.

Convert 85 watt to decibels referenced to 1 milliwatt.

There will be NO classes on spring break week.

What is the output of this program? class Data:    values = []    def __init__(self, number):        self.values.append(number)d1 = Data(10)d2 = Data(20)d3 = Data(30)print(d1.values)

What were the three major cash crops in colonial America?