Question

A human hair has a width of about 6.5 x 10-5 meter. What is this width written in standard notation?

a) 0.00065 meter
b) 0.0000065 meter
c) 0.000065 meter
d) 0.00000065 meter

Answer 1

The width of a human hair written in standard notation as 6.5 x 10^-5 meter is 0.000065 meters.

Step-by-step explanation:

To convert the width of a human hair from scientific to standard notation, we can shift the decimal point to the left as many places as indicated by the exponent of 10 in the scientific notation. The scientific notation 6.5 x 10-5 meter means that the decimal place is moved 5 places to the left. Therefore, 6.5 x 10-5 meters is equivalent to 0.000065 meters in standard notation, which corresponds to option (c) 0.000065 meter.