Risks are only in a persons
The radius of a circle is the distance from the center of a circle to any point of a circle.
Answer:
A. 70 m OS the correct one
Answer:
false
Explanation:
every object will always have the force of gravity acting upon it.
Answer:
Speed of the sound in air is 325 m/s
Explanation:
As we know that the frequency of the sound is given as
![f = 25000 Hz](https://tex.z-dn.net/?f=f%20%3D%2025000%20Hz)
wavelength of the sound is given as
![\lambda = 0.013 m](https://tex.z-dn.net/?f=%5Clambda%20%3D%200.013%20m)
now we have
![v = \lambda f](https://tex.z-dn.net/?f=v%20%3D%20%5Clambda%20f)
so we have
![v = (0.013)(25000)](https://tex.z-dn.net/?f=v%20%3D%20%280.013%29%2825000%29)
![v = 325 m/s](https://tex.z-dn.net/?f=v%20%3D%20325%20m%2Fs)