A structural member 250 mm (10 in.) long must be able to support a load of 44,400 N (10,000 lbf) without experiencing any plastic deformation. Given the following data for brass, steel, aluminum, and titanium, rank them from least to greatest weight in accordance with these criteria. Then rank the materials from least expensive to most expensive. Alloy Yield Strength [MPa (ksi)] Density (g/cm3) Cost ($US/kg)
Brass 345(50) 8.5 10.90
Steel 690(100) 7.9 3.60
Aluminum 275(40) 2.7 8.50
Titanium 480(70) 4.5 100.00

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.

An electric kettle is made out of stainless steel, weighs two pounds (when empty) and is equipped with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling

What does stp and ntp stands for in temperature measurement?