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denpristay [2]
4 years ago
6

Give a physical description of radio waves and compare and contrast it with the frequency, wavelength, energy and wave speed wit

h those of other regions of the EMS.
Physics
1 answer:
Ad libitum [116K]4 years ago
8 0
There is nothing physical about radio waves. They are pulses of energy caused by periodic variations in electric and magnetic fields. These are caused by electrons “jumping” between energy levels. Radio waves have the lowest energy, longest wavelengths and lowest frequencies. These values change gradually as we go through microwaves, infra red, visible light, ultra violet, x-rats abd gamma rays which have the highest energy, highest frequency and shortest wavelength.
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In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5220km away, and released. It found its way
denis-greek [22]

Answer:

-4.72005 m/s

0 m/s

Explanation:

Displacement = 5220 km

Time = 12.8 days

The average velocity is given by

v_a=\dfrac{0-5220\times 10^3}{12.8\times 24\times 60\times 60}\\\Rightarrow v_a=-4.72005\ m/s

The average  for the return flight is -4.72005 m/s

When the total displacement is divided by the total time of a journey then we get the average velocity.

Displacement is the minimum distance between the initial and final points of the journey.

Here, the displacement of the whole episode is 0 as the initial and final point is zero.

Hence, the average velocity for the whole episode is 0 m/s

3 0
3 years ago
In an experiment if doubling the manipulated variable results in doubling of the responding variable the relationship between th
vodomira [7]
In an experiment if doubling the manipulated variable results in doubling of the responding variable the relationship between the variable is a direct. Having a direct relationship means that the<span> relationship between two numbers or other variables where an increase or decrease in one variable causes the same change to the other variable.</span>
6 0
3 years ago
How is amplitude changed in an instrument or tuning fork
azamat

Amplitude is affected by the energy wave in the instrument. High energy wave means high amplitude and low energy wave means low amplitude.

<u>Explanation:</u>

The amplitude of a periodic variable is a measure of its change over a single period. There are various definitions of amplitude, which are all functions of the magnitude of the differences between the variable's extreme values.

The amount of energy carried by a wave is related to the amplitude of the wave. Amplitude of an instrument is directly affected by the wave of the energy in the instruments. High energy wave means high amplitude and low energy wave means low amplitude in the instrument.

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3 years ago
Write the following as powers of ten with one figure before the decimal point:
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Explain how an alpine glacier can change the topography of a mountainous area
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