What is sound and how does it produce?

Sound is the name of the term that describes mechanical waves. These mechanical waves are produced through vibration. Then, it uses particle to particle interaction to pass on the effect of the original vibration. This is where the concept of ‘Sound needs matter to travel ‘ comes into action, because these particles are only present in what they call ‘matter’. The effect of vibration, is then, carried on from one particle to another, to another and so on till it ultimately reaches the receiver.

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2 open this and click on your profile pic and if your profile is not appearing, then u have to log in.

3. when u click on your profile pic, there appears four options on the top.

4. click on the 1st option and scroll down and go at the bottom.

5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

7. click on the edit option.

8. there is a option " i want to delete my account" and click on that.

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and ur welcm

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a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.