Approximate Values of Length, Mass, and Time 18 Present experimental limit to sm

Question

Approximate Values of Length, Mass, and Time 18 Present experimental limit to smallest 10 observable detail 15 10 Diameter of a proton 14 10 Diameter of a uranium nucleus 10 10 Diameter of a hydrogen atom 8 Thickness of membranes in cells of living 10 organisms 10 o Wavelength of visible light Size of a grain of sand 10 Height of a 4-year-old child 10 Length of a football field 10 Greatest ocean depth 10 Diameter of the Earth 10 11 Distance from the Earth to the Sun 16 Distance traveled by light in 1 year (a light 10 10 21 Diameter of the Milky Way galaxy 22 10 galaxy (Andromeda) 10 26 known universe Mass of an electron 30 23 Time for light to cross a proton 10 (9.11x10 31 10 Mass of a hydrogen atom 22 Mean life of an extremely unstable 27 10 1.67x10 27 kg 10 nucleus Mass of a bacterium 5 Mass of a mosquito In a solid Mass of a hummingbird radio wave Mass of a liter of water (about a Duration of a nerve impulse quart 102 Mass of a person 1 Time for one heartbeat 5 one day (8.64x10 s 103 Mass of a car 08 Mass of a large ship 107 one year y) (3.16x 10' s 9 About half the life expectancy of a 0 Mass of a large iceberg human 011 Recorded history Mass of the nucleus of a comet gj 101 Age of the Earth 1025 Mass of the Earth (5.97x 1024 kg) 10 Age of the universe 1030 Mass of the Sun (1.99x 1030 kg 42 Mass of the Milky Way galaxy (current upper limit) upper limit)

Explanation / Answer

From table,

Mean life time of extremely unstable nucleas=10^(-22)sec

Life expectancy of a human=2*10^9 sec

Answer = 2*10^9/10^-22 = 2*10^31

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