Finding Wavelength: Ripple Tank Wave Speed & Frequency

• x-little-reme
In summary, the conversation discusses how to find the wavelength of a question given for homework. The question involves a tray of water with waves and a diagram showing waves in a ripple tank. The speed and length of the tray are given, and the task is to find the wavelength and frequency. The conversation also mentions counting the number of waves in the picture and dividing by the length of the tray.
x-little-reme
Hey, I'm stuck on how to find the wavelength of a question I have got given for homework.

The question shows a tray of water with waves and the length of the tray is 10cm. It says... The diagram shows some waves in a ripple tank traveling at a sppeed of 6cm/s. What is a) the wavelength b) the frequency

Can anyone help?? xx

How many waves are show in the picture

glennpagano44 said:
How many waves are show in the picture

It doesn't really show it that clearly. x

count the number of "hills" and "valleys", one wavelenght is one "hilL" + one "valley".

Then divide by the length of the tray.

1. What is a ripple tank and how does it work?

A ripple tank is an experimental setup used to study the behavior of waves. It consists of a shallow tank filled with water, a light source, and a wave generator. When the wave generator creates waves on the water's surface, the light source reflects off the waves and creates an interference pattern that can be observed and measured.

2. How do you calculate the speed of a wave in a ripple tank?

The speed of a wave in a ripple tank can be calculated by dividing the distance traveled by the wave by the time it takes to travel that distance. This can be measured using a ruler and a stopwatch. The formula for wave speed is v = λf, where v is the wave speed, λ is the wavelength, and f is the frequency.

3. What is the relationship between wave speed and frequency in a ripple tank?

The speed of a wave in a ripple tank is directly proportional to its frequency. This means that as the frequency increases, the wave speed also increases. This relationship is described by the formula v = λf, where v is the wave speed, λ is the wavelength, and f is the frequency.

4. How does changing the frequency affect the wavelength in a ripple tank?

Changing the frequency of the wave in a ripple tank will also change the wavelength. As the frequency increases, the wavelength decreases, and vice versa. This is because the speed of the wave remains constant, but the number of wave cycles per second (frequency) changes, causing the wavelength to change.

5. How can the wavelength and frequency of a wave in a ripple tank be measured?

The wavelength of a wave in a ripple tank can be measured by using a ruler to measure the distance between two consecutive wave crests or troughs. The frequency can be measured by counting the number of wave cycles that pass a certain point in one second. Alternatively, a stroboscope can be used to measure the frequency by flashing a light at a frequency that matches the wave's frequency, making it appear stationary.

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