the centre of mass of the apple is 25cm from the pivot and the centre of mass of the weight is 45cm from the pivot. calculate the weight of the apple

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

The slope of a velocity time graph over any interval of time gives the during that interval

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?