Auniform thin rod of mass =3.47 kgm=3.47 kg pivots about an axis through its center and perpendicular to its length. two small bodies, each of mass m=0.263 kgm=0.263 kg , are attached to the ends of the rod. what must the length of the rod be so that the moment of inertia of the three-body system with respect to the described axis is =0.907 kg·m2i=0.907 kg·m2 ?

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

How is zig zagging a form of acceleration?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.