Answer:
C
Step-by-step explanation:
The formula we use to solve this would be: [tex]T=\frac{\lambda}{v}[/tex]
Where
T is the period in seconds
[tex]\lambda[/tex] is the wavelength in m, and
v is the speed of the wave in m/s
We have [tex]\lambda[/tex] equal to 100, and v = 200 m/s. Plugging these into the equation, we get the period:
[tex]T=\frac{\lambda}{v}\\T=\frac{100}{200}\\T=0.5[/tex]
C is the right answer.
