Period (T) is the reciprocal of frequency, i.e. T=1/f = 1/2 = 0.5 second.
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The frequency is 6 per 2 seconds = 3 Hz. The period is the reciprocal of the frequency = 1/3 second.
speed = distance over time = wavelength times frequency = 2 m times 10 hz = 20 m hz = 20 meters per second.
Period = 1 / (frequency) = 1 / 6th of a second = [166 and 2/3] millisecondsSpeed = (wavelength) x (frequency) = 6 x 3 = [18] meters per second
Frequency = (speed)/(wavelength) = 20/2 = 10 Hz
2 Hz is.