Chapter 2, Problem 36E

Express each number in decimal notation (i.e., express the number without using scientific notation).

a. $450\times {10}^{-9}\text{m}$

(wavelength of blue light)

b. $13\cdot 7\times {10}^9$ years (approximate age of the universe)

c. $5\times {10}^9$ years (approximate age of Earth)

d. $5\cdot 0\times {10}^1$ years (approximate age of this author)