An object moving in a circle is represented by the motion map. based on the map, at which point is the object accelerating toward the right?

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.

What is the single most important equation in all of physics?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?