A human hair has a diameter of about 4x10^-3 inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write the answer as a decimal to 3 places.
To find the thickness of a fingernail, we need to add the diameter of a human hair and the increase in thickness of a fingernail.
Diameter of a human hair = 4x10^-3 inches
Increase in thickness of a fingernail = 0.011 inches
Thickness of a fingernail = Diameter of a human hair + Increase in thickness of a fingernail
Thickness of a fingernail = 4x10^-3 + 0.011
Thickness of a fingernail = 0.015 inches
Therefore, the thickness of a fingernail is 0.015 inches.
To determine the thickness of a fingernail, we are given that a human hair has a diameter of about 4x10^-3 inches, and a fingernail is about 0.011 inches thicker.
Since the fingernail is thicker than the hair, we can add the thickness of the hair to the thickness of the fingernail to find the total thickness.
Thickness of the fingernail = Thickness of the hair + 0.011 inches
Using scientific notation, the thickness of the hair is 4x10^-3 inches.
Thus, the thickness of the fingernail = (4x10^-3 inches) + 0.011 inches = 0.011 + 0.004 = 0.015 inches
Therefore, the thickness of a fingernail is 0.015 inches.
To find the thickness of a fingernail, we need to subtract the diameter of a human hair from the thickness of a fingernail. We can then convert the difference into a decimal by dividing it by 1.
Given:
Diameter of a human hair = 4 x 10^-3 inches
Thickness of a fingernail = 0.011 inches
To find the thickness of a fingernail:
Thickness of the fingernail = Thickness of fingernail - Diameter of hair
Thickness of the fingernail = 0.011 - 4 x 10^-3
= 0.011 - 0.004
= 0.007 inches
Thus, the thickness of a fingernail is 0.007 inches.
Writing the answer as a decimal to 3 places, we get:
Thickness of a fingernail = 0.007 inches.