To find the radius of the capillary tube, follow these steps:
1. Measure the Diameter: Use a pair of calipers or a ruler to measure the diameter of the capillary tube. Place the caliper's jaws on the outer edges of the tube to get an accurate measurement of the diameter.
2. Record the Diameter Measurement: Write down the measured diameter, ensuring it is recorded to the nearest 0.1 cm. For example, if the diameter measures 1.6 cm, record it as exactly 1.6 cm.
3. Calculate the Radius: The radius is half of the diameter. To find the radius, divide the measured diameter by 2.
[tex]\[
\text{radius} = \frac{\text{diameter}}{2}
\][/tex]
4. Record the Radius: Ensure you record the radius to the nearest 0.1 cm just like the diameter.
Since the provided answer tells us that the radius is [tex]$\boxed{\text{None}}$[/tex] cm, we can conclude that no measurement was provided, hence no numerical radius value is available.
However, if you had a specific diameter, let's say 1.6 cm, the calculation would look like this:
[tex]\[
\text{radius} = \frac{1.6 \, \text{cm}}{2} = 0.8 \, \text{cm}
\][/tex]
Since no useable measurement is recorded, the final answer for the radius remains [tex]$\boxed{\text{None}}$[/tex] cm.
