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Gnom [1K]
3 years ago
5

How might error analysis help scientists identify and quantify the

Physics
1 answer:
Naddik [55]3 years ago
6 0

Answer: For producing the error free results of an experiment that identification and quantification of effects of uncertainties are important.

Explanation:

The error analysis is necessary to detect the uncertainties in the measured data or results of the experiment to ensure the validity and acceptability of the results. The errors can be avoided by increasing the precision and accuracy of the measuring instruments. The other factors like changes in the variables of the experiment can also contribute to the errors in the experiment.

It is necessary to perform the multiple trails in an experiment to assure that the results of the experiment are consistent with every trial.

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A rod has a radius of 10 mm is subjected to an axial load of 15 N such that the axial strain in the rod is ????௫ = 2.75*10-6, de
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Answer:

Knowing we only have one load applied in just one direction we have to use the Hooke's law for one dimension

ex = бx/E

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Using both equation and solving for the modulus of elasticity E

E = бx/ex = Fx / πr^{2}ex

E = \frac{15}{pi (10 * 10^{-3})^{2} * 2.75 * 10^{-6}    } = 17.368 * 10^{9} Pa = 17.4 GPa

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ey = \frac{1}{E} (бy - v (бx + бz)) = -\frac{v}{E}бx

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ey = Δr / r

Δr = ey * r = 10 * -0.63* 10^{-6} mm = -6.3 * 10^{-6} mm

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One observer stand on a train moving at a constant speed, and one observer stands at rest on the ground. The person on the train
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