Answer:
Essentials. A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.
If the trend changed toward traditional (pre-World War II) families, the women’s rights are employment in manufacturing sector.
<h3>What is World war?</h3>
The war between two countries to take over each other's kingdom using weapons to kill each other.
Before the world war, the army needs armor, weapons, guns and tanks. Their manufacturing is only possible with many workers to work for long hours. If the men are not enough, then women are given opportunities to work with them.
Thus, the women’s rights are employment in manufacturing sector when trend changed traditional families.
Learn more about world war.
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Answer:
![x=\dfrac{r}{\sqrt2}](https://tex.z-dn.net/?f=x%3D%5Cdfrac%7Br%7D%7B%5Csqrt2%7D)
Explanation:
Given that
Radius =r
Electric filed =E
Q=Charge on the ring
The electric filed at distance x given as
![E=K\dfrac{Q}{(r^2+x^2)^{3/2}}](https://tex.z-dn.net/?f=E%3DK%5Cdfrac%7BQ%7D%7B%28r%5E2%2Bx%5E2%29%5E%7B3%2F2%7D%7D)
For maximum condition
![\dfrac{dE}{dx}=0](https://tex.z-dn.net/?f=%5Cdfrac%7BdE%7D%7Bdx%7D%3D0)
![E=K{Q}{(r^2+x^2)^{-3/2}}](https://tex.z-dn.net/?f=E%3DK%7BQ%7D%7B%28r%5E2%2Bx%5E2%29%5E%7B-3%2F2%7D%7D)
![\dfrac{dE}{dx}=K{Q}{(r^2+x^2)^{-3/2}}-\dfrac{3}{2}\times 2\times x\times K{Q}{(r^2+x^2)^{-5/2}}](https://tex.z-dn.net/?f=%5Cdfrac%7BdE%7D%7Bdx%7D%3DK%7BQ%7D%7B%28r%5E2%2Bx%5E2%29%5E%7B-3%2F2%7D%7D-%5Cdfrac%7B3%7D%7B2%7D%5Ctimes%202%5Ctimes%20x%5Ctimes%20K%7BQ%7D%7B%28r%5E2%2Bx%5E2%29%5E%7B-5%2F2%7D%7D)
For maximum condition
![\dfrac{dE}{dx}=0](https://tex.z-dn.net/?f=%5Cdfrac%7BdE%7D%7Bdx%7D%3D0)
![K{Q}{(r^2+x^2)^{-3/2}}-\dfrac{3}{2}\times 2\times x\times K{Q}{(r^2+x^2)^{-5/2}}=0](https://tex.z-dn.net/?f=K%7BQ%7D%7B%28r%5E2%2Bx%5E2%29%5E%7B-3%2F2%7D%7D-%5Cdfrac%7B3%7D%7B2%7D%5Ctimes%202%5Ctimes%20x%5Ctimes%20K%7BQ%7D%7B%28r%5E2%2Bx%5E2%29%5E%7B-5%2F2%7D%7D%3D0)
![r^2+x^2-3x^2=0](https://tex.z-dn.net/?f=r%5E2%2Bx%5E2-3x%5E2%3D0)
![x=\dfrac{r}{\sqrt2}](https://tex.z-dn.net/?f=x%3D%5Cdfrac%7Br%7D%7B%5Csqrt2%7D)
At
the electric field will be maximum.
-- What's the volume of a cylinder with radius=1m and height=55m ?
( Volume of a cylinder = π R² h )
-- How much does that volume of water weigh ?
1 liter of water = 1 kilogram of mass
Weight = (mass) x (acceleration of gravity)
-- What's the area of the bottom of that 1m-radius cylinder ?
Pressure = (force) / (area)
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