A biologist collaborating with a physicist models diffusion of ions in a cell membrane. The mean squared displacement after t seconds is given by ⟨r²⟩ = 2Dt, where D = 5 × 10⁻¹¹ m²/s. What is ⟨r²⟩ after 2000 seconds?

Thu, 30 Apr 2026 02:30:10 +0000

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