I think it will be muscle contraction. Hope this helps! Mark brainly please!
Answer:
The velocity of the flow at point 1 is nine times greater than the velocity at point 2.
Explanation:
We know that the same volume of water entering through point 1 must exit through point 2.
The volume of water per unit of time or the volumetric flow is defined by:
![V_{flow}=v*A\\ where:\\V_{flow}= flow [m^3/s]\\v=velocity[m/s]\\A=area [m^2]](https://tex.z-dn.net/?f=V_%7Bflow%7D%3Dv%2AA%5C%5C%20where%3A%5C%5CV_%7Bflow%7D%3D%20flow%20%5Bm%5E3%2Fs%5D%5C%5Cv%3Dvelocity%5Bm%2Fs%5D%5C%5CA%3Darea%20%5Bm%5E2%5D)
If 
therefore

Answer:
By its amplitude.
Explanation:
loudness is sound intensity & intensity depends on square of amplitude. for example higher the amplitude higher the intensity which means higher the loudness.
Answer:
solute + solvent = solution
Explanation:
solute is <em>Any substance that is dissolved in a liquid solvent to create a solution</em>
solvent is <em>A liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution.</em>
and.
solution is <em>A homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances.</em>