Question

question 1
1 pts
the vertical height of a wave is called:
amplitude
wavelength
median
frequency
area
question 2
1 pts
if a laser has a wavelength of 429 nm, what is the frequency of this radiation in megahertz? report your answer (to the correct number of sig figs) by filling in the blanks below with the units last.
× 10

Explanation:

Step1: Recall wave - related definitions

The vertical height of a wave from the equilibrium position to the crest or trough is the amplitude.

Step2: Recall the wave - speed formula for Question 2

The speed of light $c=\lambda
u$, where $c = 3\times10^{8}\ m/s$, $\lambda$ is the wavelength and $
u$ is the frequency. First, convert the wavelength from nm to m: $429\ nm=429\times10^{- 9}\ m$. Then, solve for $
u=\frac{c}{\lambda}=\frac{3\times10^{8}\ m/s}{429\times10^{-9}\ m}\approx6.99\times10^{14}\ Hz$. Convert Hz to MHz: $1\ MHz = 10^{6}\ Hz$, so $
u = 6.99\times10^{8}\ MHz$.

Answer:

Question 1: A. amplitude
Question 2: $6.99\times10^{8}\ MHz$