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Colt1911 [192]
3 years ago
10

What does it mean when a mineral has a definite chemical composition? Select 2 choices.

Physics
1 answer:
Sergeu [11.5K]3 years ago
8 0

Answer:

Option (2) and (4)

Explanation:

Minerals are the building blocks of rocks and they are comprised of a certain range of chemical substances whose variety of forms and their arrangements are in a preferred orientation.

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7. A car moving at 10m/s (about 22.4 mph) crashes into a barrier and stops in 0.25 m.
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Answer:

a) 0.05s

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Explanation:

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U- 10 m/s

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0.25 =(10+0)*t/2

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b) If we happened to calculate the avarage force we have to consider about acceleration

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a =?

V = U + at

0 = 10 -a * 0.05

a = 200 m/s2

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= 20 * 200

= 4000N

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Which type of thermal energy transfer occurs mostly in fluids?
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The answer is: 

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I hope this helps :D 
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