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MArishka [77]
3 years ago
13

Why does mining considered the most important industry?

Physics
2 answers:
bagirrra123 [75]3 years ago
7 0
States resources / info
Anvisha [2.4K]3 years ago
4 0

Answer:

it makes most recourses and gives us most of a materials

Explanation:

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The answer is c.

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The magnetic field lines of a bar magnet spread out from the north end to the south end. South end to the north end. Edges to th
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<h3><u>Answer;</u></h3>

the north end to the south end.

<h3><u>Explanation;</u></h3>
  • Magnetic field lines from a bar magnet form lines that are closed. The direction of magnetic field is taken to be outward from the North pole of the magnet and in to the South pole of the magnet.
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3 years ago
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The force experienced by a unit test charge is a measure of the strength of an electric:
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4 years ago
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Determine the critical crack length for a through crack contained within a thick plate of 7150-T651 aluminum alloy that is in un
Mila [183]

Explanation:

Formula to determine the critical crack is as follows.

          K_{IC} = \gamma \sigma_{f} \sqrt{\pi \times a}

  \gamma = 1,     K_{IC} = 24.1

  [/tex]\sigma_{y}[/tex] = 570

and,   \sigma_{f} = 570 \times \frac{3}{4}

                       = 427.5

Hence, we will calculate the critical crack length as follows.

      a = \frac{1}{\pi} \times (\frac{K_{IC}}{\sigma_{f}})^{2}

        = \frac{1}{3.14} \times (\frac{24.1}{427.5})^{2}

       = 10.13 \times 10^{-4}

Therefore, largest size is as follows.

            Largest size = 2a

                                 = 2 \times 10.13 \times 10^{-4}

                                 = 20.26 \times 10^{-4}

Thus, we can conclude that the critical crack length for a through crack contained within the given plate is 20.26 \times 10^{-4}.

4 0
3 years ago
PLSSS HELP I WILL GIVE U BRAINLIEST annabelle and jose are building a complete circuit for their science inquiry in class they w
Agata [3.3K]

Answer:

i think its C hope this is rhight have a good day

Explanation:

6 0
3 years ago
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