Solar energy, because of solar panels, hydroelectricity from a dam, or fossil fuels. fossil fuels would be the most ideal because it is more commonly used
Answer:
when the radius is halved, F becomes 4 times
Explanation:
<u><em>The formula is given by</em></u>
![F = \frac{Gm1m2}{r^2}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BGm1m2%7D%7Br%5E2%7D)
<u><em>When r is halved:</em></u>
![F = \frac{Gm1m2}{(1/2r)^2}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BGm1m2%7D%7B%281%2F2r%29%5E2%7D)
=> ![F = \frac{Gm1m2}{1/4 r^2}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BGm1m2%7D%7B1%2F4%20r%5E2%7D)
=> ![F = 4(\frac{Gm1m2}{r^2} )](https://tex.z-dn.net/?f=F%20%3D%204%28%5Cfrac%7BGm1m2%7D%7Br%5E2%7D%20%29)
<u><em>This means when the radius is halved, F becomes 4 times</em></u>
Answer:
0°
Explanation:
The angle between force and displacement should be 0° in order to get the maximum work done.
Work done = Force x dcosФ°
Ф is the angle between force and displacement
When Ф is zero, the maximum work done is attained
When Ф is 90, the minimum work is done, in fact, work done is 0
Answer:
7
Explanation:
A substance that is neither acidic nor basic is neutral. The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral.