Question

Which two factors are needed in order to calculate the speed of a wave?
1 frequency and wavelength
2 amplitude and period
3 amplitude and frequency
4 energy and period

Answer 1

@lawndry101 this is a Physics question. Please post Physics questions in Physics subject.
http://openstudy.com/study#/groups/Physics
Nevertheless I'll help you here
\[\text{speed of wave}=\text{frequency}\times \text{wavelength}\]

Answer 2

thanks :D