- #1
melst
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Homework Statement
A point charge Q resides at the origin. A particle of mass 0.001kg carries a charge of 6 microC. The particle is released from rest at x = 3m. Its kinetic energy as it passes x = 0.5m is 0.4J. The coulomb constant is 8.99x10^9Nm^2/C^2.
Find the charge Q. Answer in microC.
Homework Equations
I use kqQd = -k
The Attempt at a Solution
(8.99x10^9Nm^2/C^2)(6 microC)Q[(1/0.5)-(1/3]) = -0.4
Q=-4.44x10^-12
I don't know what I did wrong and is kinda confused. Can anyone help?