Acharge q = 2 μc is placed at the origin in a region where there is already a uniform electric field = (100 n/c) . calculate the flux of the net electric field through a gaussian sphere of radius r = 10 cm centered at the origin.
a) 2.26 × 105 n · m2/c
b) 5.52 × 105 n · m2/c
c) 1.13 × 105 n · m2/c
d) zero

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.