An infinitely long line of charge has linear charge density
6.00×10−12 C/m . A proton (mass1.67×10−27 kg, charge
+1.60×10−19 C) is 18.0 cm from the line and moving directly toward
the line at 2.90×103 m/s. A) Calculate the proton’s initial kinetic energy.
B) How close does the proton
get to the line of charge?
for A I got 7.02×10−21