To solve this problem it is necessary to apply the concepts related to pressure as a unit that measures the force applied in a specific area as well as pressure as a measurement of the density of the liquid to which it is subjected, its depth and the respective gravity.
The two definitions of pressure can be enclosed under the following equations
![P = \frac{F}{A}](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7BF%7D%7BA%7D)
Where
F= Force
A = Area
![P = \rho gh](https://tex.z-dn.net/?f=P%20%3D%20%5Crho%20gh)
Where,
Density
g = Gravity
h = Height
Our values are given as,
![d = 0.8m \rightarrow r = 0.4m](https://tex.z-dn.net/?f=d%20%3D%200.8m%20%5Crightarrow%20r%20%3D%200.4m)
![A = \pi r^2 = \pi * 0.4^2 = 0.503m^2](https://tex.z-dn.net/?f=A%20%3D%20%5Cpi%20r%5E2%20%3D%20%5Cpi%20%2A%200.4%5E2%20%3D%200.503m%5E2)
If we make a comparison between the lid and the tube, the diameter of the tube becomes negligible.
Matching the two previous expressions we have to
![\frac{F}{A} = \rho g h](https://tex.z-dn.net/?f=%5Cfrac%7BF%7D%7BA%7D%20%3D%20%5Crho%20g%20h)
Re-arrange to find h
![h = \frac{F}{A\rho g}](https://tex.z-dn.net/?f=h%20%3D%20%5Cfrac%7BF%7D%7BA%5Crho%20g%7D)
![h = \frac{390}{(0.503)(1000)(9.8)}](https://tex.z-dn.net/?f=h%20%3D%20%5Cfrac%7B390%7D%7B%280.503%29%281000%29%289.8%29%7D)
![h = 0.079m](https://tex.z-dn.net/?f=h%20%3D%200.079m)
![h = 7.9cm](https://tex.z-dn.net/?f=h%20%3D%207.9cm)
Therefore the height of water in the tube is 7.9cm
This would be typical of an elastic collision.
Answer:
Inertia
Explanation:
The state of motion of an object is defined by its velocity the speed with a direction. Thus, inertia could be redefined as follows: Inertia: tendency of an object to resist changes in its velocity - and ( in the absence of an unbalanced force ) will remain with a zero velocity.
Answer:
the glass that has the most water produces the lowest pitch and the glass with the smaller amount produces the highest pitch
Explanation:
the glass full of water causes the glass to vibrate slower and the sound u hear is at a lower pitch
Not enough money has been invested in the science and technology behind solar power.