Respuesta :
D.1500m/s
Speed= Distance/Time
: .You simply divide 9metres (distance) by 0.006 (time)
Answer
D. 1,500 m/s
Explanation
the wave equation states that,
V = λf
Where V ⇒ Velocity
λ ⇒ wavelength
f ⇒ Frequency
F = 1/T
Where T ⇒ period
F = 1/0.006
= 166.667
∴ V = 9 × 166.667
= 1,500 m/s