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Gnom [1K]
3 years ago
9

Why do you hear sound/static from radio waves?

Geography
1 answer:
scoray [572]3 years ago
3 0

Answer:

Radio noise is a combination of natural electromagnetic atmospheric noise created by electrical processes in the atmosphere like lightning, manmade radio frequency interference from other electrical devices picked up by the receiver's antenna, and thermal noise present in the receiver input.

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Describe the Greek city-states, different types of government and development of Democracy.
Ede4ka [16]

Answer:

A city-state, or polis, was the community structure of ancient Greece. Each city-state was organized with an urban center and the surrounding countryside. Characteristics of the city in a polis were outer walls for protection, as well as a public space that included temples and government buildings. The temples and government buildings were often built on the top of a hill, or acropolis. A surviving example of a structure central to an ancient acropolis is the famous Parthenon of Athens. The Parthenon was a temple built to honor the goddess Athena. The majority of a polis’s population lived in the city, as it was the center of trade, commerce, culture, and political activity.

There grew to be over 1,000 city-states in ancient Greece, but the main poleis were Athína (Athens), Spárti (Sparta), Kórinthos (Corinth), Thíva (Thebes), Siracusa (Syracuse), Égina (Aegina), Ródos (Rhodes), Árgos, Erétria, and Elis. Each city-state ruled itself. They differed greatly from the each other in governing philosophies and interests. For example, Sparta was ruled by two kings and a council of elders. It emphasized maintaining a strong military, while Athens valued education and art. In Athens every male citizen had the right to vote, so they were ruled by a democracy. Rather than have a strong army, Athens maintained their navy.

Greek city-states likely developed because of the physical geography of the Mediterranean region. The landscape features rocky, mountainous land and many islands. These physical barriers caused population centers to be relatively isolated from each other. The sea was often the easiest way to move from place to place. Another reason city-states formed, rather than a central, all-encompassing monarchy, was that the Greek aristocracy strove to maintain their city-states’ independence and to unseat any potential tyra

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Image problems in telescopes today can be corrected using what type of equipment?
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Changing the lenses?
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Of the three major Pacific Island groups, __________ was most recently settled.
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Polynesia Island was the most recently settled
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Armenia has a disadvantage among the nations of the Caucasus because it ___.
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It had smaller population around 2 million 
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The Earth's innermost layer is known as the core when considering ________ (physical, chemical, or mineral) properties, but is b
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Answer:

1. chemical properties

2. physical properties

Explanation:

1. chemical properties

2. physical properties

Since ,

Earth is distributed into two ways i.e. -  chemically or mechanically.

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By mechanically or ( by the state of liquids) ,

The Earth is divided into different spheres , i.e. , the lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core.( which is based on physical properties )

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