The ball of a ballpoint pen has a diameter of 1.7 mm, has an ASTM grain size

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The ball of a ballpoint pen has a diameter of 1.7 mm, has an ASTM grain size of 10, and is made of steel (iron).

How many grains are there in the ball?

How many atoms of iron are there in a grain?

Assuming the balls have been highly cold worked, estimate the number of dislocations in a grain.

Related Book For answer-question

Principles And Practice Of Physics

ISBN: 9780135610862

2nd Edition

Authors: Eric Mazur

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Posted Date: May 13, 2024 12:25 PM

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The ball of a ballpoint pen has a diameter of 1.7 mm, has an ASTM grain size

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Principles And Practice Of Physics

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