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kap26 [50]
3 years ago
10

The waves from a radio station can reach a home receiver by two paths. One is a straight-line path from transmitter to home, a d

istance of 32.0 km. The second is by reflection from the ionosphere (a layer of ionized air molecules high in the atmosphere). Assume this reflection takes place at a point midway between receiver and transmitter, the wavelength broadcast by the radio station is 344 m, and no phase change occurs on reflection. Find the minimum height of the ionospheric layer that could produce destructive interference between the direct and reflected beams.
Physics
1 answer:
slava [35]3 years ago
8 0

Answer:

Explanation:

The path of waves reaching directly and through reflection from ionosphere will form a isosceles triangle.

Let the height be h . This will be height of a triangle of equal side whose base is of length 32 km. we shall calculate the length of one side of this triangle .

this length be l

l² = 16² + h²

l =  √(256 +h² )

2l = 2√(256 +h² )

path difference = 2l - 32 km

For destructive interference

path difference = wavelength /2 for minimum height .

2l - 32  = .344/2

2√(256 +h² )- 32 = . 172

2√(256 +h² ) = 32.172

4(256 +h² ) = 1035

(256 +h² ) = 258.76

h² = 2.76

h = 1.66 km

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A radio station broadcast on a frequency of 3.7 mhz what is the energy of the radio wave
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A radio station broadcast on a frequency of 3.7 mhz what is the energy of the radio wave A radio station broadcasts its programmes at a wavelength of 500 m. Find the frequency of the radiowaves transmitted by the radio station, if the speed of radiowaves in air is 3 x 108 m/s. Ans: 6 x 10 Hz

<h3>What is radio station ?</h3>

Radio broadcasting is the act of sending audio (sound), occasionally together with accompanying metadata, across radio waves to radio receivers used by the general public. Unlike satellite radio, which uses a satellite in Earth's orbit, terrestrial radio broadcasting uses a land-based radio station to transmit radio waves. The listener needs a broadcast radio receiver to hear the material (radio). A radio network with which stations frequently have affiliations provide content in a standard radio format, whether through broadcast syndication, simulcasting, or both. Radio stations use a variety of modulations to transmit their signals, including FM (frequency modulation), which is an older analog audio standard, and AM (amplitude modulation).

To learn more about radio station from the given link:

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Explanation:

8 0
3 years ago
Read 2 more answers
susan and joe push a table 18 meters down a hall by exerting a force of 200 newtons (n). what is the total amount of work done o
prisoha [69]

Answer:

3600joules

Explanation:

formula :W=FS

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2 years ago
A passenger jet travels from Los angles to Bombay, India, in 22 h. The return flight takes 17 h. The difference in flight times
Hoochie [10]

Answer:

70.5 mph

Explanation:

A passenger jet travels from Los Angeles to Bombay, India, in 22h.

The return flight takes 17 h.

The difference in flight times is caused by winds over the Pacific Ocean that

blow primarily from west to east.

If the jet's average speed in still air is 550 mi/h what is the average speed

of the wind during the round trip flight? Round to the nearest mile per hour.

Is your answer reasonable?

:

Let w = speed of the wind

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Write a distance equation (dist is the same both ways

17(550+w) = 22(550-w)

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17w + 22w = 12100 - 9350

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w = 70.5 mph seems very reasonable

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Confirming if the solution by finding the distances using these value

17(550+70.5) = 10549 mi

22(550-70.5) = 10549 mi; confirms our solution of w = 70.5 mph

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3 years ago
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