Question

question 19 (4 points)
answer the following questions using the image below:
determine the length (in cm) of the object using the ruler. ______ cm
number of sig figs (only use whole numbers) ______
lower calibration measurement: ______ cm
upper calibration measurement: ______ cm
be sure to go to the appropriate amount of sig figs. remember, sig figs include all known digits, plus one estimated digit.

Explanation:

Step1: Determine object length

The object starts at approximately 87.0 cm and ends at 99.5 cm. So the length is $99.5 - 87.0= 12.5$ cm.

Step2: Find number of significant figures

The measurement 12.5 has 3 significant - figures.

Step3: Identify lower calibration measurement

The smallest division on the ruler is 0.1 cm. The lower calibration measurement for 12.5 cm is 12.45 cm.

Step4: Identify upper calibration measurement

The upper calibration measurement for 12.5 cm is 12.55 cm.

Answer:

Blank 1: 12.5
Blank 2: 3
Blank 3: 12.45
Blank 4: 12.55