Radio station WCCO in Minneapolis broadcasts at a frequency of 830 kHz. At a point some distance from the transmitter, the magnetic-field amplitude of the electromagnetic wave from WCCO is 4.82×10-11 T. A) Calculate the wavelength. B) Calculate the wave number. C) Calculate the angular frequency. D) Calculate the electric-field amplitude.

A

B

C

D

Explanation:

From the question we are told that

   The frequency is

    The  magnetic field amplitude is  

Generally wavelength is mathematically represented as

where c is the speed of light with value  

     =>  

     =>  

Generally the wave number is mathematically represented as

=>    

=>    

Generally the angular frequency is mathematically represented as

=>  

=>  

The the electric-field amplitude is mathematically represented as

=>    

=>    

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.