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The gravity g′ at depth d is given by g′ = g(1 − d/R) where g is acceleration due to gravity on the surface of the Earth, d is depth and R is the radius of the Earth. If the density decreased linearly with increasing radius from a density ρ 0 at the center to ρ 1 at the surface, then ρ(r) = ρ 0 − (ρ 0 − ρ 1) r / R, and the ...
It is a constant defined by standard as 9.806 65 m/s 2 (about 32.174 05 ft/s 2). This value was established by the third General Conference on Weights and Measures (1901, CR 70) and used to define the standard weight of an object as the product of its mass and this nominal acceleration.
All bodies accelerate in vacuum at the same rate, regardless of the masses or compositions of the bodies; [1] the measurement and analysis of these rates is known as gravimetry. At a fixed point on the surface, the magnitude of Earth's gravity results from combined effect of gravitation and the centrifugal force from Earth's rotation .
1 m – length of Rafflesia arnoldii, the largest flower in the world; 1 m – height of Homo floresiensis (the "Hobbit") 1.15 m – a pizote (mammal) 1.5 m – height of an okapi; 1.63 m – (5 feet 4 inches) (or 64 inches) – height of average U.S. female human as of 2002 (source: U.S. Centers for Disease Control and Prevention (CDC))
In unit systems where force is a derived unit, like in SI units, g c is equal to 1. In unit systems where force is a primary unit, like in imperial and US customary measurement systems , g c may or may not equal 1 depending on the units used, and value other than 1 may be required to obtain correct results. [ 2 ]
1–4 m 2: Area of the top of an office desk 10 1 10–20 m 2: A parking space 70 m 2: Approximate surface area of a human lung [28] 10 2: 1 square decametre (dam 2) 100 m 2: One are (a) 162 m 2: Size of a volleyball court (18 × 9 metres) [29] 202 m 2: Floor area of a median suburban three-bedroom house in the US in 2010: 2,169 sq ft (201.5 m ...
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The Greek foot (πούς, pous) had a length of 1 / 600 of a stadion, [12] one stadion being about 181.2 m (594 ft); [13] therefore a foot was, at the time, about 302 mm (11.9 in). Its exact size varied from city to city and could range between 270 mm (10.6 in) and 350 mm (13.8 in), but lengths used for temple construction appear to ...