Question

a certain gamma ray has an approximate wavelength of 0.0000000000069 meter. write this number (in m) in scientific notation.
×10 m

Explanation:

Step1: Identify non - zero digits

The non - zero digits in the number \(0.0000000000069\) are \(6.9\).

Step2: Determine the exponent of 10

The decimal point needs to be moved 12 places to the right to get a number between 1 and 10. Since we are moving the decimal point to the right for a number less than 1, the exponent of 10 is negative. So the exponent is \(- 12\).

Answer:

\(6.9\times10^{-12}\) m