Aweatherproof metal junction box measuring 4 m. × 4 m. × 6 in, has been installed to support a luminaire. two rigid metal conduits have been threaded wrenchtight into the threaded entries of the enclosure. the box has not yet been secured to the brick wall. but both conduits have been strapped to the wall 16 in. from the box. what additional support (from the following list) is required for this box? 1. two metal screws with plastic anchons il. two toggle bolts ih. two drive pins

a) none
b) i or il only
c) i or ill only
d) i. ii, or iii 10.

What precautions should you take to prevent injuries when dealing with heavy loads?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.