Each of the gears a and b has a mass of 2.4 kg and a radius of gyration of 60 mm, while gear c has a mass of 12 kg and a radius of gyration of 150 mm. a couple m of constant magnitude 10 n × m is applied to gear b. determine the number of revolutions of gear c required for its angular velocity to increase from 100 to 450 rpm and the corresponding tangential force acting on gear a. (round the final answer to two decimal places.)

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?