The Polynesian rat, or Pacific rat (Rattus exulans), known to the MÄori as kiore, is the third most widespread species of rat in the world behind the brown rat and black rat.he Polynesian rat is similar in appearance to other rats, such as the black rat and the brown rat. It has large, round ears, a pointed snout, black/brown hair with a lighter belly, and comparatively small feet.
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For the firearms cartridge ranking system, see Power factor (shooting sports). In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of â1 to 1.