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vampirchik [111]
3 years ago
13

In the television series "Cosmos" the astronomer Carl Sagan used to say, "We are all made of star stuff." What did he mean by th

at?
Physics
1 answer:
Mashutka [201]3 years ago
6 0

Answer:

<em />

<em>All of the chemical elements in our solar system were forged in an ancient star that went supernova.</em>

Explanation:

This phrase means that the carbon, oxygen and nitrogen atoms in our bodies, as well as the other heavy elements in our solar system were created from previous stars over 4.5 billion years ago.

Star stuff got to Earth by means of a supernova explosion, which is an explosion of a massive star. This kind of stellar explosion creates a large cloud of gas and dust in space and the amount of material that the cloud is composed of depends on the type of supernova. The material from a supernova eventually disperses into interstellar space. The oldest stars consist of hydrogen and helium. Oxygen and the rest of the other heavier elements in the universe come from supernova explosions.

Therefore, <em>stars make heavy elements and later in their lives, they eject gas into the medium between stars so it can be part of subsequent stars, planets and eventually people.</em>

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Which technology is intended to work at a distance of about 5 to 10 centimeters with transmission speeds of 250 Kbps?
Mars2501 [29]

Answer:

NFC Near Field Communication

Explanation:

The Near Field Communication is a communication protocol, for extra short distance with a maximum of 10 centimeters, but usually used in 4 to 5 cm. Its intended to be used in contactless pay systems and in transportation card. Actually has been used to transfer multimedia from cell phones and other devices. The maximum data rate is around 424 kbit/s, with mean in 250 Kbp

5 0
4 years ago
A circuit featuring multiple paths through which current can flow is best classified into which category?
Rina8888 [55]
A parallel circuit - there are multiple branches at which current is able to to be pushed around the circuit.
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3 years ago
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NeTakaya

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Explanation:

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3 years ago
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Answer:

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3 years ago
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Answer:

See Explanation

Explanation:

Solution:-

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Since earthquakes happen along faults and most faults are near plate boundaries, the yellow dots in the animation are found mostly at the boundaries between Earth's tectonic plates.

A subduction zone is the biggest crash scene on Earth. These boundaries mark the collision between two of the planet's tectonic plates. The plates are pieces of crust that slowly move across the planet's surface over millions of years.

Where two tectonic plates meet at a subduction zone, one bends and slides underneath the other, curving down into the mantle. (The mantle is the hotter layer under the crust.)  

Tectonic plates can transport both continental crust and oceanic crust, or they may be made of only one kind of crust. Oceanic crust is denser than continental crust. At a subduction zone, the oceanic crust usually sinks into the mantle beneath lighter continental crust. (Sometimes, oceanic crust may grow so old and that dense that it collapses and spontaneously forms a subduction zone, scientists think.)

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3 years ago
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