A charge of -17.7 nC is fixed in place at x = 0 cm, y = 2.50 cm and an identical charge of -17.7 nC is fixed in place at x = 0 cm, y = -2.50 cm, as shown.
(a) Find the electric potential at point P located at x = -9.00 cm, y = 0 cm.
-341 kV
(b) A proton is released from rest at point P. Calculate the speed of the proton as it passes through the origin (x = 0, y = 0).
(The mass and charge of a proton are $m_p = 1.67 \times 10^{-27}$ kg and $q_p = e = 1.60 \times 10^{-19}$ C.)
m/s