Waves in air, fluids and solids

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Question 39
Medium

A student uses a ripple tank with a vibrating paddle to generate water waves.

a.

The student adjusted the setting of the power supply to the motor so that the paddle hit the water fewer times each second.

What happened to the frequency of the waves produced?

  • Decreased
  • Did not change
  • Increased
[1]
b.

Describe how the frequency of the water waves in the ripple tank can be measured experimentally.

[3]
c.

In a second experiment, the student measured the frequency of the water waves as 8 Hz8\text{ Hz}8 Hz.

Calculate the period of these water waves.

Use the equation:

period=1frequency \text{period} = \frac{1}{\text{frequency}} period=frequency1​

Identify the correct unit for the period from the following options:

  • metres\text{metres}metres
  • seconds\text{seconds}seconds
  • metres per second\text{metres per second}metres per second
[2]

Waves in air, fluids and solids Questions

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