Question

directions: answer the question about wavelength.
a wave completes two wave cycles over a distances of 420 nanometers. what is the wavelength of the wave?

Explanation:

Step1: Recall wavelength definition

Wavelength ($\lambda$) is the distance of one wave cycle. If 2 cycles cover 420 nm, we divide total distance by number of cycles.

Step2: Calculate wavelength

Use formula $\lambda=\frac{\text{Total Distance}}{\text{Number of Cycles}}$. Substitute values: $\lambda=\frac{420\ \text{nm}}{2}$.

Step3: Simplify the expression

$\frac{420}{2} = 210$. So wavelength is 210 nanometers.

Answer:

210 nanometers