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The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10−2 metres ( 1 100 m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimetres. 1 cm – 0.39 inches. 1 cm – edge of a square of area 1 cm 2.
The table above shows the SI units but we use other units as well to measure the given physical quantities. Let us list some of the commonly used to units of measurement below: Length - kilometer, meter, centimeter, millimeter. Mass - kilogram, gram, milligram. Capacity - kilolitre, litre, milliliter, centilitre.
The fermi is a unit of distance used in nuclear physics equal to 1 fm. [9] The angstrom (symbol Å) is a unit of distance used in chemistry and atomic physics equal to 100 pm. The micron (μ) is a unit of distance equal to one micrometre (1 μm). The basic module (M) is a unit of distance equal to one hundred millimetres (100 mm).
The smallest length with any meaning is the Planck length (about 1.6 x 10-35 meter) Quarks are very very small (less than 10-19 meters) A Hydrogen atom is about 100 picometers in diameter (1.06 x 10-10 meters) Molecules are around the billionths of a meter in size. That is 0.000000001 meters. Some molecules are smaller and some bigger, though.
Lunar distance LD ≈ 384 402 km. [10] Average distance between the center of Earth and the center of the Moon. astronomical unit au. Defined as 149 597 870 700 m. [11] Approximately the distance between the Earth and Sun. light-year ly ≈ 9 460 730 472 580.8 km. The distance that light travels in a vacuum in one Julian year. [12]
Aug 8, 2024 · The smallest unit of length is the Fermi, which is equivalent to 10^-15 meters. Other units of length include the micron (10^-6 meters), Angstrom (10^-10 meters), and nanometer (10^-9 meters). The SI unit for length is the meter (m), which serves as the standard unit of measurement.
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Both meters and kilometers are metric system units of measuring distance. In 1 m, there are 1/1000 km. ⇒ 1 m = 1/1000 km. ⇒ 500 m = 500/1000 km. ⇒ 500 m = 1/2 km = 0.5 km. Therefore, 500 meters is equal to half a kilometer or 0.5 km. Example 2: Paul saw a giant fish that was 600 cm long in an aquarium.
