## anonymous one year ago What is the speed of a 10.0 Hz wave with a wavelength of 2.5 m? A. 0.25 m/s B. 4.0 m/s C. 25 m/s D. 35 m/s **THanks! :D

1. Michele_Laino

sorry for prvious exercise, the right formula is: $\Large fT = 1$

2. Michele_Laino

3. anonymous

ok!:)

4. Michele_Laino

ok! After my correction, we have: $\Large \lambda f = v$

5. anonymous

okay! :D

6. anonymous

how do we plug in?

7. Michele_Laino

we can write this: $\Large v = 2.5 \times 10 = ...$

8. Michele_Laino

wehave to replace \lambda with 2.5 meters and f with 10 Hz

9. anonymous

okay! so we get 25? so our answer is choice C?

10. Michele_Laino

yes! correct!

11. anonymous

yay!! thank you:)

12. Michele_Laino

thank you!! :)