Question

the value indicated by the arrow on the cm ruler is 1. the number of significant figures is 2. the uncertainty is 3. a. 1.7 cm b. 1.07 cm c. 1.1 cm d. 0 e. 1 f. 2 g. 3 h. 4 i. +/- 0.1 cm j. +/- 1 cm k. +/- 10 cm l. +/- 0.01 cm m. +/- 0.001 cm

Explanation:

Step1: Read the ruler value

The arrow is between 1.0 cm and 1.1 cm, closer to 1.1 cm, so the value is 1.1 cm.

Step2: Determine significant figures

Non - zero digits are always significant. So 1.1 has 2 significant figures.

Step3: Find uncertainty

The smallest division on the ruler is 0.1 cm, so the uncertainty is +/- 0.1 cm.

Answer:

1. C. 1.1 cm
2. F. 2
3. I. +/- 0.1 cm