A ball is rolled off the edge of a 2 meter high table. It lands on the floor 3 meters away from the edge of the table. If another ball is released from rest at a height of 2 meter the instant the first ball rolls off the table, which ball will hit the floor first? The ball that rolled off.
The ball that was dropped.
They will both hit at the same time.
You cannot tell from the info given.

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?