The average distance from earth to the moon is 384,000 km. in the late 1960s, astronauts reached the moon in about 3 days. how fast (on average) must they have been traveling (in km/h) to cover this distance in this time? compare this speed to the speed of a jet aircraft (800 km/h).

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?