16.1 To calculate the frequency of these waves, we use the formula:
Frequency (f) = Number of full waves / Time = 80 / 20 = 4 Hz
Therefore, the frequency of these waves is 4 Hz.
16.2 The period of a wave is the time it takes for one full wave to pass a point. We can calculate it using the formula:
Period (T) = Time / Number of full waves = 20 / 80 = 0.25 s
Therefore, the period of these waves is 0.25 seconds.
16.3 The speed of a wave can be calculated using the formula:
Speed (v) = Frequency (f) x Wavelength (λ)
Since the wavelength is given as 2 m, and we already calculated the frequency to be 4 Hz, we can substitute these values into the formula:
Speed (v) = 4 Hz x 2 m = 8 m/s
Therefore, the speed of these waves is 8 meters per second.
80 full waves each with a wavelength of 2 m move past a point in 20secons.
16.1 calculate the frequency of these waves
16.2 calculate the period of these waves
16.3 calculate the speed of these waves
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