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3 years ago

Which portion of the electromagnetic spectrum is used in a television?

Physics

1 answer:

vladimir1956 [14]3 years ago

3 0

<h2>Answer: Radio waves </h2><h2 />

Radio waves are a type of electromagnetic radiation with wavelengths between 10 m to 10,000 m. In the electromagnetic spectrum this wavelength is longer than infrared light and therefore, it goes beyond the visible spectrum.

This type of electromagnetic waves is very well reflected in the ionosphere, the layer of the atmosphere through which they travel directly or using repeaters.

In addition, they are very useful to transport information, being important in telecommunications. They are used not only for conventional radio transmissions but also in mobile telephony and TV.

It should be noted that since radio signals have large wavelengths, they can be diffracted around certain obstacles, such as hills and mountain ranges, preventing the signal from reaching its destination.

Therefore, the correct option is C.

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3 years ago

5. A man has a weight of 100 Newtons. How much work is done if he climbs 4 meters up a ladder? Plug numbers under the equation.

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Answer:

Explanation:

The work done by an object can be found by using the formula

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We have the final answer as

Hope this helps you

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2 years ago

A cart travels 4.00 meters east and then4.00 meters north. determine the magnitude ofthe cart’s resultant displacement.

gogolik [260]

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Square root of (4^2 + 4^2) = 4*squareRoot(2)

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2 years ago

What are the set of equations called that can be used to quantify motion in the case of uniform acceleration?

KATRIN_1 [288]

The kinematic equations are used to <span>quantify motion in the case of uniform acceleration.

The other name is : SUVAT equations, where the letters signify:
displacement (s),
initial velocity (u),
final velocity (v),
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There are three equations are attached in the picture: </span>

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3 years ago