Why do we have a long waves and short waves

2 answers:

6 0

These phrases, which refer to the radio wavelength employed, are used in radio communications. There is no actual formal definition of longwave, however they are low frequency radio waves that are often below 540 kHz.

These low frequency radio waves travel across the earth via ground waves and may be picked up practically everywhere. On the other hand, shortwave radios encompass the spectrum from long or medium wave up to microwave frequencies and are higher frequency (hence shorter wavelength). Medium frequencies (HF) are a combination of ground and sky wave and may be received at medium to long ranges. Higher frequencies (VHF and UHF) are mostly short range sky wave propagation.

Allisa [31]2 years ago

5 0

Answer:

If we vibrated the rope rapidly then a short wave was created and if we vibrated the rope less frequently not as often but a long rope was created.

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Look around your house and find materials that illustrate examples of brittle, ductile, and elastic deformation. Photograph each

bulgar [2K]

Answer:

Brittle materials:

Brittle materials are those material which does not shows any indication before failure.It means that they break suddenly without showing any indication.These materials have zero ductility.

Ex :

1.Glass is the very common example for brittle material and in our house we can easily see that when ever glass fall on the floor it breaks in very small pieces.

2. Metal objects are made from metal they behave as brittle like cast iron.

3. The another familiar example in our house for brittle material is dry clay.

Ductile materials:

Ductile materials which shows a indication before fracture.It have a range ,within this range they did not fail.The ability of material to draw into wires is known as ductility of that materials.

Ex :Those object are made from carbon steel,gold,silver etc.

Elastic deformation :

To regain the original shape after removal of load is known as elastic deformation.

Ex: The familiar example of elastic deformation is rubber band ,when we apply a force on the rubber band then it goes under the deformation but after removal the load come back on the original position.

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Rzqust [24]

I think the answer is the epicentre

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3 years ago

Rip currents form because Group of answer choices the longshore current gets intensified. there is more coastal upwelling than u

Sholpan [36]

Answer:
Option D
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Explanation:

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