The initials “AM” stand for amplitude modulation. Instead of fluctuating frequencies as above, they instead vary the amplitude, such that y= A(t)sin[2pif]t. Notice that the frequency is now fixed, but the amplitude will be inconsistent. Each AM station is assigned a frequency in kHz (1000 waves/second.) For example, 760AM is assigned a frequency of f=760kHz. a. What is the wavelength of the 760AM radio waves? b. Suppose a station has equation y=A(t)sin(1,850,000pit). What is this station? c. Sketch a graph of y=2^tsin(t) and explain graphically what the amplitude is doing.
The initials “AM” stand for amplitude modulation. Instead of fluctuating frequencies as above, they instead vary the amplitude, such that y= A(t)sin[2pif]t. Notice that the frequency is now fixed, but the amplitude will be inconsistent. Each AM station is assigned a frequency in kHz (1000 waves/second.) For example, 760AM is assigned a frequency of f=760kHz. a. What is the wavelength of the 760AM radio waves? b. Suppose a station has equation y=A(t)sin(1,850,000pit). What is this station? c. Sketch a graph of y=2^tsin(t) and explain graphically what the amplitude is doing.
Chapter16: Electromagnetic Waves
Section: Chapter Questions
Problem 103AP: Radar is used to determine distances to various objects by measuring the round-trip time for an echo...
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The initials “AM” stand for amplitude modulation. Instead of fluctuating frequencies as above,
they instead vary the amplitude, such that y= A(t)sin[2pif]t. Notice that the frequency is
now fixed, but the amplitude will be inconsistent. Each AM station is assigned a frequency in
kHz (1000 waves/second.) For example, 760AM is assigned a frequency of f=760kHz.
a. What is the wavelength of the 760AM radio waves?
b. Suppose a station has equation y=A(t)sin(1,850,000pit). What is this station?
c. Sketch a graph of y=2^tsin(t) and explain graphically what the amplitude is doing.
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