Question

the radius of the Sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. Express each of these numbers in an alternate form In scientific notation

Answer 1

Explanation;

Writing scientific notation :

• Move the decimal to the left side until single digit of number remains before the decimal.
• Then we will count the number of times we moved the decimal. Write this number as the exponential power of number '10'.
• For Example:
  `2894.55=2.89455* 10^(3)`

Radius of the sun = 696,000.0 kilometer

`1 km=10^3 m`

Radius of the sun can also be written as =
`6.96* 10^(5) km=6.96* 10^(5)* 10^3 m=6.96* 10^(8) meter`

Size of bacterial cell =
`1.9* 10^(-4)` millimeter

`1 mm=1* 10^(-3) m`

Size of bacterial cell can also be written as =
`1.9* 10^(-4)* 10^(-3) m=1.9* 10^(-7) meter`