Erosion, plate tectonics, and orbited celestial bodies (meteors etc.) <span />
Work = Force multiplied by the distance(or displacement)
Answer:
![F_2=40N](https://tex.z-dn.net/?f=F_2%3D40N)
Explanation:
The magnitude of the gravitational force is inverseley proportional to the square of the distance of separation of the masses. So, we have:
![F=\frac{GmM}{d^2}](https://tex.z-dn.net/?f=F%3D%5Cfrac%7BGmM%7D%7Bd%5E2%7D)
We have to calculate the force (
) when they are 5.0 cm apart:
![F_1=\frac{GmM}{d_1^2}\\F_2=\frac{GmM}{d_2^2}\\\frac{F_2}{F_1}=\frac{\frac{GmM}{d_2^2}}{\frac{GmM}{d_1^2}}\\\frac{F_2}{F_1}=\frac{d_1^2}{d_2^2}\\F_2=F_1\frac{d_1^2}{d_2^2}\\F_2=10N\frac{(10cm)^2}{(5cm)^2}\\F_2=40N](https://tex.z-dn.net/?f=F_1%3D%5Cfrac%7BGmM%7D%7Bd_1%5E2%7D%5C%5CF_2%3D%5Cfrac%7BGmM%7D%7Bd_2%5E2%7D%5C%5C%5Cfrac%7BF_2%7D%7BF_1%7D%3D%5Cfrac%7B%5Cfrac%7BGmM%7D%7Bd_2%5E2%7D%7D%7B%5Cfrac%7BGmM%7D%7Bd_1%5E2%7D%7D%5C%5C%5Cfrac%7BF_2%7D%7BF_1%7D%3D%5Cfrac%7Bd_1%5E2%7D%7Bd_2%5E2%7D%5C%5CF_2%3DF_1%5Cfrac%7Bd_1%5E2%7D%7Bd_2%5E2%7D%5C%5CF_2%3D10N%5Cfrac%7B%2810cm%29%5E2%7D%7B%285cm%29%5E2%7D%5C%5CF_2%3D40N)
The answer is a. endothermic.
In endothermic reaction, as the name suggests, the reactants require energy absorption to form and complete the chemical reaction to form products.
And even if you don't know the answer, you can exclude all other answers by scientific logic and you will be left with the correct answer.
Hope this helps.