Acat lifting a barbell of 2.5 kg a distance of 3 meters. how much work is done lifting the barbell? how much work is done if the cat holds the barbell over his head for 3 minutes?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

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?

Newtons view of arrangement of the universe. don't copy from anywhere.