Fermi Questions Constants
Terms
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- Volume of the earth
- 24.03 L
- Radius of the earth
- 3.80 km
- Mass of the moon
- 22.87 kg
- Circumference of the earth
- 4.60 km
- Surface area of the earth
- 8.71 km^2
- Speed of sound in air at 20 degrees Celsius
- 2.54 m/s
- Mass of the earth
- 24.78 kg
- Land surface area of the earth
- 8.17 km^2
- Water surface area of the earth
- 8.56 km^2
- Earth-sun distance
- 8.17 km
- Mass of the sun
- 30.30 kg
- pi (3.14159...)
- .50
- 2pi (6.283...)
- .80
- Earth-moon distance
- 5.58 km
- Radius of the sun
- 5.84 km
- Volume of the oceans
- 21.13 L
- e (2.71828...)
- .43
- Area of the United States
- 6.98 km^2
- Area of North America
- 7.39 km^2
- Perimeter of the United States
- 4.50 km
- Population of the earth
- 9.82 people
- Population of the United States
- 8.48 people
- Seconds in a minute
- 1.78 s
- Seconds in an hour
- 3.56 s
- Seconds in a day
- 4.94 s
- Seconds in a lifetime (US average)
- 9.39 s
- Speed of light in m/s
- 8.48 m/s
- mph in a m/s
- .35 mph
- Meters in a light year
- 15.98 m
- Inches in a meter
- 1.60 in
- Kilometers in a mile
- .21 km
- Pounds in a kilogram
- .34 lb
- Liters in a cubic mile
- 12.62 L
- Cups in a liter
- .63 cups
- Pints in a liter
- .32 pints
- Quarts in a liter
- .02 quarts
- Liters in a gallon
- .58 L
- Fluid ounces in a liter
- 1.53 fluid ounces
- Seconds in a year
- 7.50 s
- Square meters in an acre
- 3.61 m^2
- Inches in a foot
- 1.08 in
- Feet in a mile
- 3.72 ft
- Avogadro's number
- 23.79 g/mol
- atomic mass units in a kilogram
- 26.78 u
- electron masses in a kilogram
- 30.04 m_e
- Electron-volts in a joule
- 18.80 eV
- Joules in a calorie
- .62 J
- World power consumption (W)
- 13.13 W
- US power consumption (W)
- 12.52 W
- Power received by earth from the sun
- 17.24 W