Un trabajador quiere subir un tanque cuya masa es de 100 kg. a la plataforma de un camión que tiene 1 m. de altura. La longitud del plano inclinado que va a utilizar es de 5 m. ¿Qué fuerza debe ejercer el trabajador para subir el cilindro?

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?