Answer:

Explanation:
Let A and B be two points located in a uniform electric field, A being a distance d from B in the direction of the field. The work that an external force must do to bring a unit positive charge q from the reference point to the point considered against the electric force at constant speed, mathematically is expressed by:

Therefore, isolating
and replacing the data provided:

Answer:

Explanation:
Hello,
In this case, since the hockey puck was moving at 34 m/s and suddenly stopped (final velocity is zero) in 7 seconds, we can first compute the acceleration via:

In such a way, we can compute the displacement via:

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Answer:
April to June
Explanation:
Not really an explanation, I just know it.
Wherever a river loses energy
Answer:
The answer is C. Pollution