Sketch a charge distribution that would be considered a quadrupole (Note: you can, in theory, place the center of your coordinate system anywhere, but there is a natural choice that makes uses of the symmetry of the quadrupole).

In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.