Answer:
2
Explanation:
agility is the ability to zoom fast and do fast zoomy stuff
I think that the answer is C)
Answer:410 Hz
Explanation:
It is given that frequency of tuning fork is 415 Hz and hears a beat of 5 beat per second
so untuned frequency must be either 410 Hz or 420 Hz because beat frequency is the difference in frequency of two notes.
When she tightens the string the beat frequency decrease
and velocity ![v=\nu \lambda](https://tex.z-dn.net/?f=v%3D%5Cnu%20%5Clambda%20)
where ![\nu =frequency](https://tex.z-dn.net/?f=%5Cnu%20%3Dfrequency)
![\lambda =wavelength](https://tex.z-dn.net/?f=%5Clambda%20%3Dwavelength)
![v=velocity](https://tex.z-dn.net/?f=v%3Dvelocity)
![v=\sqrt{\frac{T}{\mu }}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B%5Cfrac%7BT%7D%7B%5Cmu%20%7D%7D)
where T=tension
it T increase v also increases and from 1 st equation frequency is also increasing therefore untuned frequency must be 410 Hz because beat frequency is decreasing.
The RATE of change of position is speed.