While watching the crane in operation, an observer mentions to you that for a given load there is a maximum angle θmax between 0∘ and 90∘ that the crane arm can make with the horizontal without tipping the crane over. is this correct?

Does heating a metal wire increase or decrease its electrical resistance? why?

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?

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical