Yes that is a balaned equation
Okay, haven't done physics in years, let's see if I remember this.
So Coulomb's Law states that

so if we double the charge on

and double the distance to

we plug these into the equation to find
<span>

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So we see the new force is exactly 1/2 of the old force so your answer should be

if I can remember my physics correctly.
Answer: 2 blocks east if i'm not mistaken.
Explanation:
If a metal rod of length L moves with velocity v is moving perpendicular to its length, in a magnetic field B, the induced emf is given by :

The electric field in the conductor is given by :

It is clear that the electric field is independent of the length of the rod. If the length of the rod is doubled, the electric field in the rod remains the same.
C is the correct answer.
If you find my answer helpful, please brainliest me!