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3 years ago

Which of these statements best describes a similarity between the two galaxies?

2 answers:

8 0

Elliptical and Spiral have some similarities, they both are huge and contain lost of dust and also they are held by gravitational forces.

olasank [31]3 years ago

3 0

<u>Answer:</u> The correct statement is both are held together by gravitational forces.

<u>Explanation:</u>

Galaxies are defined as the system which contain millions or billions of stars bind together by gas or dust and held together by gravitational forces.

There are three types of galaxies: elliptical, spiral and irregular shaped. All the galaxies have different shapes of centers. Some may have elongated centers, some can shape like bars.

The galaxies do not change their shape from time to time. Minor changes might be seen but change is shape does not happen.

Hence, the correct statement is both are held together by gravitational forces.

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3 years ago

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What are three examples of constructive forces

Olin [163]

The three main constructive forces are crustal deformation, volcanic eruptions, and deposition of sediment.

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3 years ago

Find the intensity of the electromagnetic wave described in each case. (a) an electromagnetic wave with a wavelength of 630 nm a

qaws [65]

Find the intensity of the electromagnetic wave described in each case.

(a) an electromagnetic wave with a wavelength of 645 nm and a peak electric field magnitude of 8.5 V/m.

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4 years ago

If the Sun suddenly went dark, we would not know it until its light stopped arriving on Earth. How long would that be, in second

Gre4nikov [31]

Answer: 500 s

Explanation:

Speed $v$ is defined as a relation between the distance $d$ and time $t$ :

$v=\frac{d}{t}$

Where:

$v=3(10)^{8}m/s$ is the speed of light in vacuum

$d=1.5(10)^{11}m$ is the distance between the Earth and Sun

$t$ is the time it takes to the light to travel the distance $d$

Isolating $t$ :

$t=\frac{d}{v}$

$t=\frac{1.5(10)^{11}m}{3(10)^{8}m/s}$

Finally:

$t=500 s$

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3 years ago

Write a sentence on how these words are used in real life situations

ipn [44]

Answer:

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3 years ago