To determine the velocity of a wave in a ripple tank, we can use the formula:
Velocity = Frequency × Wavelength
Given: Frequency = 30 Hz Number of complete waves = 25 Distance traveled = 50 cm
First, let's calculate the wavelength of the wave.
Wavelength = Distance traveled / Number of complete waves = 50 cm / 25 = 2 cm
Now we can calculate the velocity of the wave:
Velocity = Frequency × Wavelength = 30 Hz × 2 cm = 60 cm/s
Therefore, the velocity of the wave in the ripple tank, with a vibrator working at a frequency of 30 Hz that produced 25 complete waves in a distance of 50 cm, is 60 cm/s.