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MakcuM [25]
3 years ago
8

What happens when electromagnetic waves strike a rough, dark material?

Biology
2 answers:
Sidana [21]3 years ago
7 0
When electromagnetic waves strike an obstacle, some of the wave is reflected off the surface of the obstacle, some of the wave is absorbed and some is transmitted through the material. But in the case of dark material, dark colour usually absorb all the waves that hit it, so in this case, the electromagnetic waves will mostly be absorbed by the dark material.
mamaluj [8]3 years ago
4 0

Answer:

A

Explanation:

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Tom and Jerry start at the same location. Tom is travelling due east at a velocity of 5 m/hr. Jerry is travelling due northwest
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Answer:

The distance between them is changing at the speed of 10.16 m/hr

Explanation:

Consider the sketch attached below.

The question is simply asking to calculate the resultant of the two velocities.

To get the angle between them, we simply use the coordinates of the two vectors to determine the angle between them.  

90 + 45 = 135°

from the cosine rule we have

c^{2} = a^{2} + b^{2} - 2abcosθ

c^{2} = 6^{2} +5^{2} - 2 ×6×5×cos 135

c^{2} = 103.426

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Item 10
schepotkina [342]
Answer A or answer C
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How do scientists use weather variables to describe and predict weather?
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Temperature, pressure, wind speed and direction, cloud coverage,precipitation and humidity
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Which of these is heated by radiation? A. An ice cube melts while you hold it in your hand. B. Hot soup rises to the top of the
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Answer:

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Convection is the heat transfer occurs in moving materials (liquid or gas) due to the temperature difference between two regions. Hot soup rises to the top of the bowl, while cooler soup sinks to the bottom is an example of convection. The hot soup is less dense than cold soup, so it rises to the top and the cold soup at the top sinks to the bottom.

Radiation is a form of heat transfer where the heat energy is transferred through electromagnetic waves like infrared, UV rays etc. The sun's energy is transferred through the vacuum of space to Earth by radiation. Heat energy is transferred through vacuum by infrared radiation emitted by the Sun. The Earth absorbs it and turns the energy into heat.

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