What is the frequency of a wave

2 answers:

6 0

The frequency of a wave is the number of waves that passes through a point in a certain time. The less waves that pass in a period of time the lower the frequency of the wave. The more waves that pass in a period of time the higher the frequency of the wave. When measuring wave length the time period used is usually one second.

Xelga [282]2 years ago

4 0

Explanation:

The frequency of a wave is defined as the number of vibrations or oscillations per unit time. It is also defined as the reciprocal of the time period. Its SI unit is hertz or s⁻¹.

Mathematically, it can be written as :

$\nu=\dfrac{1}{T}$

T is the time period of the wave.

The relation between the frequency and the wavelength is inverse. Also,

$\nu=\dfrac{v}{\lambda}$

The wave having higher frequency have higher energy and vice versa.

Hence, this is the required solution.

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A weight suspended from a spring is seen to bob up and down over a distance of 20 cm triply each second. What is the period? Wha

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Answer:

1) Hence, the period is 0.33 s.

2) The amplitude is 10 cm.

Explanation:

1) The period is given by:

$T = \frac{1}{f}$

Where:

f: is the frequency = 3 bob up and down each second = 3 s⁻¹ = 3 Hz

$T = \frac{1}{f} = \frac{1}{3 Hz} = 0.33 s$

Hence, the period is 0.33 s.

2) The amplitude is the distance between the equilibrium position and the maximum position traveled by the spring. Since the spring is moving up and down over a distance of 20 cm, then the amplitude is:

$A = \frac{20 cm}{2} = 10 cm$

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