Using a common metric ruler, you measure the separation distance between two Al spheres from center to center to be 2.3 cm. What is the lowest uncertainty that you can use with this measurement? a. 0.5 mm b. 1.0 mm c. not possible to tell d. 0.5 cm e. 0.1 mm

Question

Physics

Eleanor Wilkins

23 June, 03:39

Using a common metric ruler, you measure the separation distance between two Al spheres from center to center to be 2.3 cm. What is the lowest uncertainty that you can use with this measurement? a. 0.5 mm b. 1.0 mm c. not possible to tell d. 0.5 cm e. 0.1 mm

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Answers (1)

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Casey Johns · Answer 1

Answer: 0.5 mm

Explanation: The smallest division that a common ruler has is 1 mm so any measurement taken is approximately accurate to a mm.

Uncertainty of any measuring instrument is the inaccuracy or lost of precision that occur due to its less divisions in an instrument

Uncertainty = Least Count / 2

Uncertainty = 1 mm / 2

Uncertainty = 0.5 mm

it means that measurement can be 2.3cm ± 0.5mm