Making measurements and analysing data

Question 9

Medium

An aerospace engineer is testing a new high-performance carbon-fiber composite. The areal weight (mass per unit area) of the dry fabric is measured using a scale calibrated in ounces per square yard ( $oz/yd2\text{oz/yd}^2$ ).

The scale reading is recorded as $14.5 \pm 0.2\text{ oz/yd}^2$ .

Convert this areal weight reading into grams per square meter ( $g/m2\text{g/m}^2$ ), ensuring your converted value is given to 3 significant figures. Determine the absolute uncertainty in the converted areal weight value, giving it to 1 significant figure.

Use the following conversion factors:

$g1\text{ ounce (oz)} = 28.35\text{ g}$
$m1\text{ yard (yd)} = 0.9144\text{ m}$

[4]

Making measurements and analysing data

Question 9

Making measurements and analysing data Questions

Making measurements and analysing data

Question 9

Making measurements and analysing data Questions