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gayaneshka [121]
3 years ago
13

How many atoms are in something determines its

Physics
1 answer:
inn [45]3 years ago
5 0
How many atoms are in something determines it "mass"
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The "lead" in pencils is a graphite composition with a Young’s modulus of about 1×1010N/m21×1010⁢N/m2. Calculate the change in l
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Answer:

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Explanation:

Given that

E= 1 x 10¹⁰ N/m²

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We know that elongation due to force F given as

\Delta L=\dfrac{FL}{AE}

\Delta L=\dfrac{FL}{\dfrac{\pi d^2}{4}\times E}

\Delta L=\dfrac{4\times 60}{\dfrac{\pi \times 0.5^2}{4}\times 10^4}

ΔL = 0.12 mm

Therefore the answer is -

b) 0.1 mm

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