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horsena [70]
2 years ago
6

Match the sentences in Column A based on whether they describe radio waves, visible light waves, or both (Column B). Column A 1.

They’re invisible. : They’re invisible. 2. They have colors. : They have colors. 3. They’re used to learn about dust and gas clouds. : They’re used to learn about dust and gas clouds. 4. They can travel in a vacuum. : They can travel in a vacuum. 5. They’re used to find the temperature of stars. : They’re used to find the temperature of stars. 6. They have energy. : They have energy.
Physics
2 answers:
Andrew [12]2 years ago
8 0
<span>1. They’re invisible - RADIO WAVES

2. They have colors. - VISIBLE LIGHT WAVES

3. They’re used to learn about dust and gas clouds. - BOTH

4. They can travel in a vacuum. </span> - BOTH<span>

5. They’re used to find the temperature of stars. </span>- VISIBLE LIGHT WAVES<span>

 6. They have energy. </span> - BOTH
vovikov84 [41]2 years ago
5 0

Answer:

1. They’re invisible - Radio waves

2. They have colors - Visible

3. They’re used to learn about dust and gas clouds. - Both

4. They can travel in a vacuum. - Both

5. They’re used to find the temperature of stars. - Visible

6. They have energy. - Both

Explanation:

The magnetic spectrum consists invisible and visible part of the spectrum. The invisible part consists of radio waves. These are waves used for radios, tvs, and cellphone communications. They satisfy all the properties of transverse waves.

The visible part comes from light. This is the part that is visible to the naked eye. Examples are ultraviolet rays, the sun, neon lights etc. To determine how hot something is, the visible portion is used. The brighter the object, the hotter it is.  Thus, the brightness of the stars can be determined by the color of the light emitted. The visible rays satisfy all the properties of transverse waves. However, light is considered a dual nature - it has wave and electron-like properties.

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If the radius of an atom is 60 pm and the radius of the Earth is 6000 km, by how many orders of
kherson [118]

Answer:

1 x 10¹⁷

               

Explanation:

Given data:

        Radius of the earth  = 6000km

        Radius of an atom  = 60pm

Now, how many orders is the radius of the earth larger than an atom

Solution:

To solve this problem, let us express both quantity as the same unit;

         1000m  = 1km

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    60pm;

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The order:   \frac{6 x 10^{6} }{6 x 10^{-11} }   = 1 x 10¹⁷

               

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2 years ago
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Answer:force equals to rate of change of momentum

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The correct answer is B) <span>neutron keep protons apart so they don’t repel 
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Just find the density of every metal and select the one with a density of 2.71 g/cm³ . This is:

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