An engineer claims to have measured the characteristics of a heat engine that takes in 100 J of thermal energy and produces 20 J of useful work. What is the smallest ratio of temperatures (in Kelvin) of the hot and cold reservoirs?

3x + 2x = both people using the same measure of like 5x = x= 25 meters per second. 25ms. it takes them 4 seconds to

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Phagocytes contain digestive enzymes to facilitate the process of phagocytosis

Aand b antarctica is a north pole.  field lines enter earth near the north pole.the magnetic pole near antarctica is a north pole.compasses point toward a magnetic pole that is a north pole.field lines circle earth from east to west.a compass can lead a hiker to the geographic north pole.