Question

each second, a star converts 4.0×10⁷ tons of hydrogen into helium and energy in the form of gamma rays. write this number in standard notation.
4.0×10⁷ =

Explanation:

Step1: Recall scientific - notation rule

In scientific notation \(a\times10^{n}\), when \(n>0\), move the decimal point \(n\) places to the right.

Step2: Move the decimal point

For \(4.0\times 10^{7}\), since \(n = 7\), move the decimal point 7 places to the right. We get \(40000000\).

Answer:

\(40000000\)