An ideal spring is used to stop blocks as they slide along a table without friction. A 0.75 kg block traveling at a speed of 2.3 m/s can be stopped over a distance of 0.15 m once it makes contact with the spring. A rectangular block on a level surface moves at velocity v to the right towards a spring that rests on the surface and is attached to a fixed mount on the right.

What distance would a 1.60 kg block travel after making contact with the spring if the block is traveling at a speed of 3.2 m/s before it makes contact with the spring?

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?