10-6 metres
-- Exact circumference = 2pi meters -- Approximate circumference = 6.283 meters
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21.91 meters
The diameter of a helium atom is approximately 0.1 nanometers, or 1 angstrom. In meters, this translates to about 1 × 10^-10 meters. Helium atoms are among the smallest atoms, with their size largely determined by the electron cloud surrounding the nucleus.
-- exactly (pi) meters -- approximately 3.1416 meters
The approximate size of a nucleus is about 1 femtometer (1 x 10^-15 meters). This makes it about 100,000 times smaller than the size of the atom as a whole.
No, the typical size of a nucleus is on the order of femtometers (10^-15 meters). The size of a nucleus is much smaller than 0.006 meters.
The distance from the nucleus to the electron in an atom is typically on the order of several thousands of times the diameter of the nucleus. This is due to the small size of the nucleus compared to the electron's orbit.
The size of an atomic nucleus is typically on the order of femtometers (10^-15 meters), which is much smaller than the size of the atom itself. The nucleus contains protons and neutrons tightly packed together in a small volume at the center of the atom.
-- Exact circumference = 2pi meters -- Approximate circumference = 6.283 meters
some people say it's one mile long, but it's only 3 meters long.
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21.91 meters