A wave oscillates 4.0 times a second and has a wayelength of 3.0 m, What are
the frequency, period, and speed of the wave?

The frequency is given as 4 HzThe period is 0.25 sThe speed of the wave is 12 m / s.

Explanation:

The frequency is the oscillation of a wave or the repeated cycles that occur over a some time. It is inversely proportional to the time.The frequency of a wave is given in the question as 4 cycles / 1 s = 4 Hz.The period is the time required for one complete vibration of the cycle passed to a given point. It is inversely proportional to the frequency.

                    Period T = 1 / F  

                                    = 1 / 4

                                T = 0.25 s.

The speed of the wave is defined as the product of frequency and wavelength. It is given as c = f λ.

where c represents the speed of a wave,

           f represents the frequency,

          λ represents the wavelength.

                                  c = f λ

                                     = 4.0 3.0

                                  c = 12 m / s.