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sleet_krkn [62]
3 years ago
15

Can anyone tell me why I got this wrong?

Physics
1 answer:
Anika [276]3 years ago
3 0

Answer:

0.8sec

Explanation:

Σf= 7.5-5= 2.5 N to the left

Σf=m*a=>2.5=2a=>a=1.25 m/s²

Lets say that the speed is 1m/s

a=speed-0/x=>x=1/1.25=>x=0.8

Hence the time will be 0.8sec

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For a brass alloy, the stress at which plastic deformation begins is 345 MPa (50,000 psi), and the modulus of elasticity is 103
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Answer:

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Explanation:

Given:

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on substituting the values, we get

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or

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on substituting the values, we get

\delta l =\frac{44850\times0.076}{0.00013\times103\times 10^9}

or

\delta l =0.254\ mm

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3 years ago
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Answer:

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