D is the answer trust me have faith it’s for the glory of humanity
I do have a couple ideas and tips that may help you win. I don’t know how the guidelines are set up so if the ideas won’t be helpful I apologize.
First off put some ice cubes in the container then sprinkle salt on them, The reaction will create an effect and be super cold.
Another idea would be to get some dry ice if you able to, This will freeze it solid within seconds.
The last idea combines the the first. Take a bowl and fill it with with water and ice (Make sure the bowl is insulated) add a small handful of salt into the bowl, Put your drink into the cooler and before shutting stir then well then close and wait for the amount of time left, Your should have a cold water bottle.
I hoped this helped you out and I hope you also win the contest.
The big bang theory is the most accepted theory regarding the origin of the solar system. It suggests that our star, the Sun, was first created by a cloud of<span>dust and gas.</span>
Answer:
magnet 4
because opposite direction i.e north and south will attract each other
Force is defined as the rate of change of momentum.
The initial amount of momentum is
![mv](https://tex.z-dn.net/?f=mv)
because water stops when it hit the wall total change of momentum must be
![\Delta p=mv](https://tex.z-dn.net/?f=%20%5CDelta%20p%3Dmv%20)
.
Now let's calculate the force.
![F= \frac{dp}{dt}=\frac{d(mv)}{dt}=\frac{dm}{dt}v](https://tex.z-dn.net/?f=F%3D%20%5Cfrac%7Bdp%7D%7Bdt%7D%3D%5Cfrac%7Bd%28mv%29%7D%7Bdt%7D%3D%5Cfrac%7Bdm%7D%7Bdt%7Dv)
We need to find
![\frac{dm}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bdm%7D%7Bdt%7D)
. This is the amount of water hiting the wall per second.
![\frac{dm}{dt}=\rho Av](https://tex.z-dn.net/?f=%5Cfrac%7Bdm%7D%7Bdt%7D%3D%5Crho%20Av)
Our final formula would be:
![F=\rho Avv=\rho Av^2](https://tex.z-dn.net/?f=F%3D%5Crho%20Avv%3D%5Crho%20Av%5E2)
And now we can calculate the answer: