The fact that the layers of graphite are held together by only weak Van der Walls forces implies that they can slide over each other.
<h3>Why is graphite a solid lubricant?</h3>
We know that graphite is composed of layers. These hexagonal layers are held together by weak Van Der Walls forces and as such are able to slide over each other. The carbon atom in each layer are held together by strong covalent bonds.
The fact that the layers of graphite are held together by only weak Van der Walls forces implies that they can slide over each other and as such make the graphite fluid.
Thus, the image that shows these layers of graphite is attached to this an answer
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The correct answer is
D.) discontinuous
Brainliest?
Answer:
what is the force of gravitational attraction between an object with a mass of 100 kg and another object that has a mass of 300 kg are at a distance of 2m apart
Answer:
The overall velocity of the water when it hits the bottom is:
Explanation:
Use the law of conservation of energy.
Call it instant [1] to the moment when the water is just before reaching the falls.
At this moment its height h is 206 meters and its velocity horizontally 
is 
m/s.
At the instant [1] the water has gravitational power energy 
The water also has kinetic energy Ek.
Then the Total E1 energy is:
In the instant [2] the water is within an instant of touching the ground. At this point it only has kinetic energy, since the height h = 0. However at time [2] the water has maximum final velocity 
So:
As the energy is conserved then 
Now we solve for .
