Answer :
The erosive power increases as the velocity increases of the stream.
What is power?
Power is the rate of job completion or energy delivery in science and engineering. It is denoted by the symbol W/t, which is the product of the amount of labor (W) or energy (E) transported divided by the amount of time (t).
Any given amount of work can be finished fast with a high-powered motor or slowly with a low-powered motor. Units of power, which measure work (or energy) per unit of time, include joules per second (or watts), ergs per second, and foot-pounds per minute.
For picking up material as opposed to carrying it in suspension, more velocity is required. The rate of erosion and velocity both rise during the peak discharge. Deposition and transportation are barely separated. It follows that merely a slight drop in velocity causes sedimentation.
Therefore, the erosive power decreases as the velocity increases of the stream.
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The erosive power of a stream as velocity increases because no force of interaction between positive and neutral object.
What is Coulomb's law?
Coulomb's law states that the electric force is directly proportional to the product of the charged objects.
The electric force is also inversely proportional to the square of the distance between the charges and is denoted below:
F= kq1q2/ r² (Newton)
where,
F=electric force
k=Coulomb constant
q1, q2=charges
r=distance of separation
So, here we know that when two objects are charged and placed at some distance "d" apart then the two objects will either attract or repel each other.
If the charges are of similar type then the two objects will repel while if the charges are of opposite nature then two objects will attract each other.
So here when a charge object is near the neutral then there is NO force between two objects.
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