a balloon is inflated from 0.04000 l to 0.8000 l against an external pressure of 8.00 atm. how much work is done in joules? 101.3 j = 1 l × atm

Which of the following would be considered a nec code violation in regards to the installation of luminaires? a. an outdoor lighting fixture mounted to a tree b. a five-pound, 12-inch diameter light fixture supported by the screw shell of the lampholder c. florescent lay-in fixtures attached to the framing sections of a suspended ceiling with sheet-metal screws d. track lighting over a sink, 2 feet from a bathtub