Explanation:
The frequency of an organ pipe if it is open is given by :

v is speed of sound in air is 343 m/s at 20°C
For fundamental frequency, n = 1

First overtone frequency,

Second overtone frequency,

Third overtone frequency

Hence, this is the required solution.
Answer:
Waves carry energy from one place to another. Because waves carry energy, some waves are used for communication, eg radio and television waves and mobile telephone signals. Some types of waves need to be transmitted through matter, either a solid, liquid or a gas. For example, water waves have to travel in water.
A chain position over a certain amount of time
Answer:
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i dont know the answer of your question correctly