.. Investigate what are the derived quantities, then make a table where the relationships with the fundamental quantity to which they belong. Calculate the absolute and relative error in the following two cases:

• By measuring 4.7 m as the length of a room that is actually 4.67 m.

• By considering 51 m as the distance between two points actually located at 52.06 m

• As a measure of the radius of a 3 µm drop of saliva we have obtained 2.97 µm. Find the absolute and relative error.

• When measuring 2 m an error of 2 mm was made, and in 400 km the error made was

400 m. Which relative error is greater?

• The distance between Santiago and Santo Domingo is 155.56 km.

a) Approximate the distance to the tenths by rounding and truncation.

b) Calculate the absolute error made in both cases.

c) Calculate the relative error made in both cases.

d) Justify, according to the previous results, which approximation is better.

• When measuring a laboratory flask with an uncertainty range of ± 1 mm obtained as measurements of its base diameter 9.1 cm and height of 17.2 cm, determine the percentage of uncertainty of each of these measurements.

8. Determine the uncertainty in measurements.

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