Planck length ( $ℓ_{P}$ )

The Planck length is

ℓ_{P} = ℏ G / c^{3}

. Together with the Planck mass

m_{P} = ℏ c / G

it satisfies

G m_{P} / c^{2} = ℓ_{P}

.

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Past exam of the mathematics course of the University of Cambridge / 2005 / iii / Paper 55 / 1 / c / Solution
Past exam of the mathematics course of the University of Cambridge / 2005 / iii / Paper 62 / 4 / Solution
Past exam of the mathematics course of the University of Cambridge / 2006 / iii / Paper 57 / 1 / Solution
Past exam of the mathematics course of the University of Cambridge / 2006 / iii / Paper 57 / 3 / Solution
Past exam of the mathematics course of the University of Cambridge / 2017 / iii / Paper 311 / 4 / Solution
Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 325 / 4 / Solution
Past exam of the physics course of the year 1 of the natural sciences course of the University of Cambridge / 2018 / Section A / 3 / Solution

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