The answer would be erin out of all of them thank me later :)
Answer:
D. Molecules of a gas slow down and change to a liquid state.
Explanation:
- Condensation refers to a process by which a gas changes from gaseous state to liquid state. For example, water vapor changes to from the state of being a gas to liquid state water.
- Condensation is the opposite of evaporation and occurs when gaseous particles slow down and change into liquid state.
- Heat energy is lost during condensation and gaseous molecules lose kinetic energy making them to slow down and thus changing to liquid state,
Answer:
![PE=81.755\, J](https://tex.z-dn.net/?f=PE%3D81.755%5C%2C%20J)
Explanation:
Given that:
- mass of meteoroid,
![m=7.8\times 10^8 \,kg](https://tex.z-dn.net/?f=m%3D7.8%5Ctimes%2010%5E8%20%5C%2Ckg)
- radial distance from the center of the planet,
![R= 2.8\times 10^7 m](https://tex.z-dn.net/?f=R%3D%202.8%5Ctimes%2010%5E7%20m)
- mass of the planet,
![M=4.4\times 10^{25}\, kg](https://tex.z-dn.net/?f=M%3D4.4%5Ctimes%2010%5E%7B25%7D%5C%2C%20kg)
<u>For gravitational potential energy we have:</u>
![PE=G\frac{M.m}{R}](https://tex.z-dn.net/?f=PE%3DG%5Cfrac%7BM.m%7D%7BR%7D)
substituting the respective values:
![PE=6.67\times 10^{-11}\times \frac{4.4\times 10^{25}\times 7.8\times 10^8}{2.8\times 10^7}](https://tex.z-dn.net/?f=PE%3D6.67%5Ctimes%2010%5E%7B-11%7D%5Ctimes%20%5Cfrac%7B4.4%5Ctimes%2010%5E%7B25%7D%5Ctimes%207.8%5Ctimes%2010%5E8%7D%7B2.8%5Ctimes%2010%5E7%7D)
![PE=81.755\, J](https://tex.z-dn.net/?f=PE%3D81.755%5C%2C%20J)
Because the scientific method can go around in a circle as many times as neccisary to get the results you need