4. A +3.0 x 10-5 C charged particle with a mass of 2.0 x 104 kg is ejected through the top positive plate of a parallel plate apparatus with a velocity of 250.0 m/s. The electric field between the plates has a field strength of 3.6 x10³ N/m Determine the velocity that the charge is travelling just before colliding with the negative plate that is 10.0 cm away.

4. A +3.0 x 10-5 C charged particle with a mass of 2.0 x 104 kg is ejected through the top positive plate of a parallel plate apparatus with a velocity of 250.0 m/s. The electric field between the plates has a field strength of 3.6 x10³ N/m Determine the velocity that the charge is travelling just before colliding with the negative plate that is 10.0 cm away.