The figure shows two equal, positive charges, each of magnitude 50 μC, fixed at points (3,0)m and (−3,0)m respectively. A charge −50μC, moving along negative y-axis has a kinetic energy of 4 J at the instant it crosses point (0,4)m. The position on y axis (in m) of this charge where the direction of its motion reverses for the first time after crossing this point is 3√x then the value of x is (neglect gravity).

The figure shows two equal, positive charges, each of magnitude 50 μ

1.	The figure shows two equal, positive charges, each of magnitude 50 μC, fixed at points (3,0)m and (−3,0)m respectively. A charge −50μC, moving along negative y-axis has a kinetic energy of 4 J at the instant it crosses point (0,4)m. The position on y axis (in m) of this charge where the direction of its motion reverses for the first time after crossing this point is 3√x then the value of x is (neglect gravity).
Answer» The figure shows two equal, positive charges, each of magnitude $50 μ C$ , fixed at points $(3, 0) m$ and $(- 3, 0) m$ respectively. A charge $- 50 μ C$ , moving along negative y-axis has a kinetic energy of $4 J$ at the instant it crosses point $(0, 4) m$ . The position on y axis (in $m$ ) of this charge where the direction of its motion reverses for the first time after crossing this point is $3 \sqrt{x}$ then the value of $x$ is (neglect gravity).

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