"you are asked to perform a survey in a region of the country you haven't worked in before. so, you look on the map that is maintained by the public land survey system for one of the two main reference lines you will need. the reference line you are looking for for a true north to south reference is called the . this is on the plss maps maintained by ngs"

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.