## anonymous one year ago A set of water waves travels at 10.0 m/s, and 4.0 waves pass you in 2.0 s What is the wavelength of the waves? 5.0 m , 4.0 m , 0.25 m , or 0.2 m

1. Michele_Laino

2. anonymous

ok!

3. Michele_Laino

I'm pondering...

4. anonymous

ok!!

5. Michele_Laino

If I call with \lambda the wavelength of each wave, then we can write: $\frac{{8\lambda }}{2} = 10$ from which I find \lambda=2.5 meters which is not an option of yours

6. anonymous

yes:/ i am not sure...but if i apply that equation, it should be like so? i got 10*2 =20/4=5? would it be 5 m is the solution?:

7. anonymous

Yes 5.0 m is the answer

8. anonymous

Did your question change from 8.0 waves to 4.0 waves?

9. Michele_Laino

if the answer is 5 meters then 8 waves are long 5*8 = 40 meters, and 40/2 = 20 m/second

10. anonymous

ooh okay! and so whenever we get these kinds of problems, we use that equation? oh yes, i put 8 earlier by accident, but i changed it to 4 :/ did it not go through on your side? :/

11. anonymous

Yes I noticed it changed so the answer is 5.0 m

12. anonymous

it shows as 4.0 on my side currently... what about on your side? :/

13. anonymous

oh okay! yay! sorry about that! :P OS is kind of wonky right now lol :P thank you1!

14. anonymous

No problem

15. Michele_Laino

maybe there is a typo in your options?