An object is made up of three masses connected by massless rods of fixed length. mass a is located at (30.0 cm, 0 cm) and has a mass of 250 grams, mass b is located at (0 cm, 40.0 cm) and has a mass of 350 grams, mass c is located at (-20.0 cm, 0 cm) and has a mass of 450 grams. what is the moment of inertia of this object about an axis perpendicular to the x-yplane and passing through the origin

Asimply means that over time there was some sort of change.

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

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.