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Diameter of an atom
10^-10 m
Wavelength of UV radiation
10nm
Height of adult human
2m
Distance between earth and sun
1.5×10^11m
Mass of hydrogen atom
10^-27 kg
Mass of an adult human
70 kg
Mass of car
1000kg
Seconds in a day
90000 s
Seconds in a year
3×10^7 s
Speed of sound in air
300 ms^-1
Power of a light bulb
60W
Atmospheric pressure
1×10^5 Pa