A particle is traveling between two charged plates, separated by a distance d=1.5 mm, with an initial velocity of 18.5x104 m/s to the right as shown. It is observed that the particle is slowing down as it approaches the right plate. Assume that it is known that the particle is either an electron or a proton; which is it, you ask? You need to determine the type of particle first and then calculate the speed of the particle just as it arrives at plate on the right. Do NOT use scientific notation. Enter your answer as a decimal or whole number.

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?