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Lubov Fominskaja [6]
3 years ago
13

HELP please im gonna fail

Physics
1 answer:
makkiz [27]3 years ago
8 0

Answer:

Are you cheating in an exam/project yes or no

Explanation:

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Strong evidence for the existence of dark matter comes from observations of
adoni [48]

Answer:

NASA's Chandra X-ray Observatory and other telescopes such as the Hubble telescope.

Explanation:

Dark matter and normal matter have been wrenched apart by the tremendous collision of two large clusters of galaxies.

The above observations have provided the strongest evidence yet that most of the matter in the universe is dark.

5 0
3 years ago
___ acceleration occurs when an object speeds up
AleksandrR [38]

Explanation:

Acceleration is defined as the change in velocity over time.

When there is an increment or increase in the magnitude of velocity of a moving body then it is known as positive acceleration.

Whereas when there is a decrease in magnitude of velocity of a moving body then it is known as negative acceleration.

Thus, we can conclude that positive acceleration occurs when an object speeds up.

3 0
3 years ago
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What are two ways to change the state of a substance?
weeeeeb [17]
Solid to liquid
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By adding or removing heat energy aka thermal energy 
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3 years ago
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A student rides her bike to school. Her school is 5 miles from home. She travels at an average rate of 15 miles per hour. How mu
Elden [556K]

Answer:

.3 repeating hours

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3 0
2 years ago
Is (kr) an element a compound or a mixture?
Xelga [282]

Krypton ... symbol Kr ... is an element.  It's element number 36, because
there are 36 protons in the nucleus of every atom of Krypton. 

Krypton has nothing to do with Superman, except that about 75 years ago,
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so they chose it for the name of his home planet.

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3 years ago
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