A spring in a toy gun has a spring constant of 10 N/m and can be compressed 4 cm. It is then used to shoot a 1 g ball out of the gun. Find the velocity of the ball as it
leaves the gun

What happens in a global convection cell

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

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?