From the questions very confusing but quite interesting
solution:
2÷9×9=2 that means the amount is two naira in my country
Answer:
When two balls are raised from one end and released, they strike the row and two balls pop out from the other end. If instead, one ball popped out with twice the speed of the two, this would violate <u>law of conservation of energy</u>.
Explanation:
"According to law of conservation of energy, energy can neither be created nor destroyed it only changes it's states."
we can prove it as
the initial momentum = 2mv
if one ball popped out with 2v then the momentum would be conserved.
But the initial kinetic energy of these two balls are given as
![\frac{1}{2}mv^{2} +\frac{1}{2}mv^{2} = mv^{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dmv%5E%7B2%7D%20%20%2B%5Cfrac%7B1%7D%7B2%7Dmv%5E%7B2%7D%20%20%3D%20mv%5E%7B2%7D)
but if the speed of one ball is twice then that of other one then the kinetic energy won't remain conserved.
![K.E = \frac{1}{2}m(2v)^{2} = 2mv^{2}](https://tex.z-dn.net/?f=K.E%20%3D%20%5Cfrac%7B1%7D%7B2%7Dm%282v%29%5E%7B2%7D%20%20%20%3D%202mv%5E%7B2%7D)
thus it violates the law of conservation of energy.
Answer:
please tell in English
Explanation:
Please explain in English.. I have not understood what you have written.
So sorry I cannot help you
The portion of the flux leaves the curved surface of the cylinder is 60%.
<h3 /><h3>What are electrons?</h3>
The electrons are the spinning objects around the nucleus of the atom of the element in an orbit.
If a point charge is located at the center of a cylinder and the electric flux leaving one end of the cylinder is 20% of the total flux leaving the cylinder.
If 20% of the flux leave from one end, then another 20% will leave from another end.
So, the net flux through curved surface is
100 -20 -20 = 60%
Thus, the total flux leaves the curved surface of the cylinder is 60%
Learn more about electrons.
brainly.com/question/1255220
#SPJ1
Answer:
C) steel turning to rust in salt air
Explanation:
The missing options are:
A) ice melting to form liquid water
B) water boiling to form steam
C) steel turning to rust in salt air
D) sugar dissolving into hot coffee
In a chemical change the atoms of the reacting compounds are reordered forming new compounds. In a chemical change, new compounds appear, but in a physical change not.
Then, change of states like ice melting and water boiling are not chemical changes.
During steel rust, components of steel, like iron, are oxidized, that is, reacts with oxygen forming oxides.
The dissolution of sugar into hot coffee is a physical change in which sugar molecules get further apart in the coffee, but they don't change.