Question

Which measurement has 2 significant figures? *

0.00601 m
O
0.00600 m
0.00066 m
0.006060 m
0.006006 m

Answer 1

`0.00066`

Step-by-step explanation:

Any number is significant if;

» It is before the decimal point. i.e; 1.000 [1 is a significant figure] and all other values will be significant. Hence the value has 4 signigicant figures.

» It is non-zero value, and when it is after a decimal point. i.e; 0.1, 0.01, 0.0001 [1 is the significant figure]. Hence each value has one significant figures.

» It is after any non-zero value, that comes after a decimal place. i.e; 0.00100 [the last two zeros are significant]. Hence the value has three significant figures.

Summary :

• 1.00 » three significant figures. ( 1 only )

• 0.01 » one significant figure. ( 1 only )

• 0.010 » two significant figures. ( 1 and last zero )

• 0.01006 » four significant figures (1, last two zeros, and 6)

• 0.00066 » two significant figures ( 6 and 6 )