một tụ điện đuoc nap den nang luong dự trữ bằng 4J. SAu đó một tụ thứ hai không tích điện nói song song với nó. nếu điẹn tich phân bố bằng nhau thì năng lượng dự trữ trong điện truong là bao nhieu

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?