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borishaifa [10]
3 years ago
9

Which evidence did Ottowa scientists collect in researching PCB concentrations in Alaska?

Physics
2 answers:
Sergio [31]3 years ago
7 0
PCBs were found in greater concentrations in lakes where more salmon spawned.
Olin [163]3 years ago
3 0
Hey mate!
You stuck?

The answer is C) PCBs were found in greater concentrations in lakes where more salmon spawned. Evidence of hti swas depicted in the Ottowa notes of travel.  

Hope this helps! :)
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an object is moving in a straight line with a constant acceleration initially it is traveling at 16 meters per second. 3 seconds
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A)It moved 6 meters.

B)It would 3 meters.

I think this is the answer.

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What are the standard units of length, mass, and volume in the<br> metric system?
antoniya [11.8K]

Answer:

Meter, Gram and Liter.

Explanation:

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In the process of melting, what best describes what happens to a solid?
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<span>a. A solid will gain kinetic energy and become a liquid.</span>
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A rifle fires a 2.01 10-2-kg pellet straight upward, because the pellet rests on a compressed spring that is released when the t
Zina [86]

Answer:

The value of spring constant is 266.01 \frac{N}{m}

Explanation:

Given:

Mass of pellet m = 2.01 \times 10^{-2} kg

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Spring compression x = 9.45 \times 10^{-2} m

From energy conservation law,

Spring potential energy is stored into potential energy,

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Where k = spring constant, g = 9.8 \frac{m}{s^{2} }

  k = \frac{2mg(h_{f} -h_{o} )}{x^{2} }

  k = \frac{2 \times 9.8 \times 6.03\times 2.01 \times 10^{-2} }{(9.45\times 10^{-2} )^{2} }

  k = 266.01 \frac{N}{m}

Therefore, the value of spring constant is 266.01 \frac{N}{m}

6 0
3 years ago
A child rides a wagon down a hill. Eventually, the wagon comes to a stop. Which is most responsible for causing the wagon to sto
Dvinal [7]

Answer:

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