Find the Frequency of an AM Radio Station with a 75m Tower and Ground Reflection

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Homework Help Overview

The discussion revolves around determining the frequency of an AM radio station based on the height of a radio antenna and its relationship to wavelength and ground reflection. The problem involves concepts from wave physics and radio transmission.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the relationship between the height of the antenna and wavelength, questioning which equations are appropriate for calculating frequency. There are discussions about the velocity of radio waves and the correct interpretation of the wavelength in the context of the problem.

Discussion Status

The discussion is ongoing, with participants providing various insights and equations. Some have suggested potential values for frequency and questioned the correctness of the equations being used, indicating a mix of interpretations and approaches.

Contextual Notes

There is uncertainty regarding the velocity of radio waves and how it applies to the problem. Participants are also considering the implications of the antenna height in relation to wavelength and ground reflection.

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URGENT! Frequency question

Homework Statement


A radio antenna for an AM station is 75m high tower that is equivalent to lamda/4; another lamda/4 corresponds to ground reflection. At what frequency does the station transmit?


Homework Equations


v=f(lamda)
E=cB

The Attempt at a Solution



Actually, I am not sure what equation to use!?

Please help..I think it's a simple question if i know the equation
 
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What is the velocity of radio waves?
Use the relevant equation to find f.
 


THe answer is 1M Hz..v=f lamda
is not the right equation to use?
 


The formula is correct. In the problem wavelength λ = 2*150m. What is the velocity of radio waves?
 

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