Radio waves have a _____ frequency and a _____ wavelength.
1 answer:
Radio waves have a low frequency and a long wavelength. (A. low; long)
Explanation:
Electromagnetic waves are periodic oscillations of the the electric and the magnetic field in a plane perpendicular to the direction of motion the wave.
All electromagnetic waves travel in a vacuum at the same speed, which is known as the speed of light:
Electromagnetic waves are also divided into 7 different types, according to their wavelength and frequency. From shortest to longest wavelength (and therefore, from highest to lowest frequency), we have:
Gamma rays
X rays
Ultraviolet
Visible light
Infrared radiation
Microwaves
Radio waves
As we can see from the list, radio waves are the waves with lowest frequency and longest wavelength. They are used in telecommunications, satellite communications, and in general in long-distance transmission of signals. So, the correct answer is
Radio waves have a low frequency and a long wavelength.
Learn more about electromagnetic waves:
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<h2>Answer: None of the above choices are correct.</h2>
Explanation:
Here we are talking about the vibration frequency of an object:
(1)
The frequency is defined as the inverse of the period
(time):
(2)
Therefore the Period is:
(3)
Now, if we want to find the period we have to substitute equation (1) in equation (3):
<u>Finally:</u>
>>>>This is the value of the <u>period</u>, which does not match with any of the options given.
Hence:
None of the above choices are correct.