Science Quiz / Physical Constants

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Can you name the physical constants to three (or four) significant digits?

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Constant	Value	Units
Speed of light (c)		x 10⁸ m/s
Avogadro's number (N_A)		x 10²³ mol^-1
Electron mass (m_e)		x 10^-31 kg
Proton mass (m_p)		x 10^-27 kg
Elementary charge (e)		x 10^-19 C
Planck constant (h)		x 10^-34 m³/kg·s²
Molar gas constant (R)		J/mol·K
Electric constant (ϵ₀)		x 10^-12 F/m
Gravitational constant (G)		x 10^-11 m³/kg·s²
Bohr radius (a₀)		x 10^-11 m

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Created Sep 23, 2009Source
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