a system that uses reflected radio waves to detect objects and to measure their distance and speed is called

1 answer:

3 0

Such system is called RADAR (RAdio Detection And Ranging).

The Radar emits radio waves, that are reflected back by the object. Since the speed of the radio waves is known (their speed is equal to the speed of light), by measuring the time the waves take to come back to the source it is possible to infer the distance they covered, and so the distance of the object.

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In a binary star system, an unseen component is found to have 8 solar masses. It would be visible if the system were a normal st

maksim [4K]

Answer:

Black Hole

Explanation:

A black hole is a very dense and massive stellar object, which has a field of gravity so large that not even light can escape it.

Since it does not emit light, we cannot see them directly, hence the name of black hole.

So in this case, if the object has a mass of 8 solar masses that is enough to form a black hole, and also cannot be seen, all of this indicates that the object we are talking about is a black hole.

It should be mentioned that although these objects do not emit light, because it cannot escape due to the immense force of gravity, black holes can be detected by a type of radiation emitted on their event horizon due to quantum effects called Hawking radiation .

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3 years ago

The largest stars are _____ times the mass of the Sun. 10 100 1,000 10,000

Arte-miy333 [17]

<h3>Answer;</h3>

100 times

<h3>Explanation;</h3>

The largest stars are 100 times the mass of the Sun.
The giant stars are about 10 to 100 times the radius of the sun, which means they are 100 times brighter than the sun.
The largest known star in terms of mass and brightness is known as the Pistol Star. It is believed to be 100 times as massive as our Sun, and 10,000,000 times as bright.

5 0

3 years ago

If your face is 62 cm in front of a plane mirror, where is the image of your face located?

timurjin [86]

Answer:

62 cm is in front of the mirror

Explanation:

This is answers

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3 years ago

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Can the force of gravity cause any deformation to an object?

PSYCHO15rus [73]

Answer:

yes it could deform a shape or an object

Explanation:

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3 years ago

A model train traveling at a constant speed around a circular track has a constant velocity

TiliK225 [7]

A model train traveling at a constant speed around a circular track has a constant velocity. FALSE.
Hope this helps you!

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3 years ago