To solve this problem, it is necessary to take into account the concepts of the number of vacations N_v at a given temperature as well as the calculation of the number of atom sites per cubic meter.
For definition the number of atomic sites per cubic meter is given as,
Where,
Avogadro's number
density
A = Atomic weight
Replacing with our values we have
At the same time we know that the number of vacancies 
is defined as,
![[tex]N_v = Ne^{-\frac{Q_v}{KT}}](https://tex.z-dn.net/?f=%5Btex%5DN_v%20%3D%20Ne%5E%7B-%5Cfrac%7BQ_v%7D%7BKT%7D%7D)
[/tex]
Where,
Energy of vacancy
Boltzman constant
T = Temperature
Replacing with the values given we have
Therefore the number of vacancies per cubit meter at 1000°C is
C) 2 ohms I think don't fully trust my answer I suck at math but I think it's c
Answer:
a baseball player swinging a bat and hitting a baseball, causing the bat to shatter
Explanation
took the test, hope it helps
<span>A rocket in its simplest form is a chamber enclosing a gas under pressure. A small opening at one end of the chamber allows the gas to escape, and in doing so provides a thrust that propels the rocket in the opposite direction. A good example of this is a balloon. Air inside a balloon is compressed by the balloon's rubber walls. The air pushes back so that the inward and outward pressing forces are balanced. When the nozzle is released, air escapes through it and the balloon is propelled in the opposite direction.</span>
