The answer is
Pitch of the buzzer increased (higher tone) as it moves towards the observer
Answer:
The fundamental wavelength of the vibrating string is 1.7 m.
Explanation:
We have,
Velocity of wave on a guitar string is 344 m/s
Length of the guitar string is 85 cm or 0.85 m
It is required to find the fundamental wavelength of the vibrating string. The fundamental frequency on the string is given by :

Now fundamental wavelength is :

So, the fundamental wavelength of the vibrating string is 1.7 m.
The radio waves have a very low frequency so they will always have a very low energy.
Good luck :)
Mechanical and Chemical. (Weathering and erosion)
I’m sorry I can’t understand