Question

An electromagnetic wave has a wavelength of 4000 meters. What is this wave length and scientific notation?

A. 4.0 x 10-3 m
B. 4.0 x 10 3 m
C. 4.0 x 10 2 m
D. 4.0 x 10-2 m

Answer 1

Wavelength of electromagnetic wave = 4.0 × 10³

Step-by-step explanation:

Given:

Wavelength of electromagnetic wave = 4000 meter

Find:

Write, Wavelength of electromagnetic wave into scientific notation

Computation:

Wavelength of electromagnetic wave = 4000 meter

Wavelength of electromagnetic wave = 4.0 × 1,000 meter

Wavelength of electromagnetic wave = 4.0 × 10³

So,

Option "B" is the correct answer to the following question.