Question

What is the wavelength (in cm) and the period (in seconds)?

Answer 1

`"please look at the fallowing explanation."`

Explanation:

`"Since the wave crest labeled with Y is formed after 4 seconds"` `" from X, X travels 6 cm in 4 seconds."`
`"The propagation speed of the waves can be found."`

`v=x/t=6/4=1.5 (cm)/s`

`"There are 5 wave crest between X and Y."`

`5*lambda=6`

`lambda=6/5=1.2 cm(" wavelength")`

`v=lambda/T`

`T=lambda/v`

`T=(1.2)/(1.5)=0.8 "sec( Period)"`