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30 to 60 seconds FL350 (35,000 ft; 10,650 m) 30 to 60 seconds 15 to 30 seconds FL400 (40,000 ft; 12,200 m) 15 to 20 seconds 7 to 10 seconds FL430 (43,000 ft; 13,100 m) 9 to 12 seconds 5 to 6 seconds FL500 (50,000 ft; 15,250 m) 8 to 10 seconds 5 seconds
Disintegrations per minute (dpm) and disintegrations per second (dps) are measures of the activity of the source of radioactivity. The SI unit of radioactivity, the becquerel (Bq), is equivalent to one disintegration per second. This unit should not be confused with cps, which is the number of counts received by an instrument from the source.
One nonillionth of a second. rontosecond: 10 −27 s: One octillionth of a second. yoctosecond: 10 −24 s: One septillionth of a second. jiffy (physics) 3 × 10 −24 s: The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. zeptosecond: 10 −21 s: One sextillionth of a second.
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Choosing unhealthy food choices (31%), not exercising (26%) and not prioritising self-care (28%) topped the list. And over 40% also admitted to being guilty of making impulsive decisions.
The power emitted in radioactive decay corresponding to one curie can be calculated by multiplying the decay energy by approximately 5.93 mW / MeV. A radiotherapy machine may have roughly 1000 Ci of a radioisotope such as caesium-137 or cobalt-60. This quantity of radioactivity can produce serious health effects with only a few minutes of close ...
One person was purported to survive 7 days in the desert, 6 of these without water, without suffering heat stroke as the temperature reached no higher than 103.2 °F (39.6 °C) during his ordeal. [9] However, he had reached the third stage of dehydration, which is 80-90% fatal; this likely represents an upper limit of survival at high temperatures.
Dunbar's number has become of interest in anthropology, evolutionary psychology, [12] statistics, and business management.For example, developers of social software are interested in it, as they need to know the size of social networks their software needs to take into account; and in the modern military, operational psychologists seek such data to support or refute policies related to ...