You can Stick to the formula which is :
wavelengths/secounds = Hz
so that
Frequency (Hz) = Wave speed (m/s) / Wavelength (m)
OR
Frequency (Hz) = 1 / Period (s)
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Period= 1/ frequency
Therefore you must go to the graph of displacement vs time, determine the frequency (or the number of cycles per second), and then find its reciprocal to determine the wave's Period, T.
Take the reciprocal of its frequency, just like any wave of any other shape.
Graphically, the period is the length of time between consecutive occurrences
of the same point in the wave form, just like any other wave.
The only tough part about a square wave is that there are only two points on it
that you can definitely identify in time ... the rising transition and the falling transition.
But that's OK. The time between two rising transitions or two falling transitions is
still the period, even if the square wave is ugly and its positive time and negative
time are unequal, or it has a DC component.
If the transitions are sloped rather than instantaneous, then the zero-crossings are
easily identifiable points in time. These characteristics are all easily spotted on an
oscilloscope.
The period of a wave is the time it takes for one complete cycle of the wave to occur. It can be calculated using the equation T = 1/f, where T is the period and f is the frequency of the wave.
Period = (wavelength of the wave) divided by (speed of the wave)
also . . .
Period = ( 1 ) divided by (frequency of the wave)
The speed of a wave is determined by the equation: speed = wavelength / period. Without knowing the wavelength, it is not possible to calculate the speed based solely on the wave period.
The period of a wave is the time it takes for one complete cycle. To calculate the period of a wave, you use the formula T = 1/f, where T is the period and f is the frequency. So, for a wave with a frequency of 8Hz, the period would be 1/8 seconds, which is 0.125 seconds.
To calculate frequency from a wave diagram, count the number of complete cycles of the wave that occur within a period of time. Then, divide the number of cycles by the time period to determine the frequency in hertz (Hz). The formula for calculating frequency is: frequency = number of cycles / time period.
The period of a sound wave is the time it takes for one complete cycle. To find the period, we need to know the speed of sound in the medium the wave is traveling through. The formula to calculate the period is: period = wavelength / speed of sound.
The diagram provided doesn't specify the time period of the wave, which is necessary to calculate the frequency (frequency = 1 / time period). In addition, the distance between wave peaks (wavelength) is also required as the speed of the wave can be calculated using the equation speed = frequency x wavelength. Without both the time period and wavelength, the frequency cannot be determined.