A resting mouse of mass uses about .

PHYSICS · Multi-part · Fermi University Physics · Biophysics & Medical Physics · Physical foundations of the living cell · Physical foundations of the living cell

Life at Thermal Energy, Ch The scales of life and the thermal energy

Problem

A resting mouse of mass 25 g25\,\mathrm{g} uses about 0.20 W0.20\,\mathrm{W}. ((a)) Find its power density in W kg−1\mathrm{W\,kg^{-1}}. ((b)) By what factor does it exceed a resting person's 1.4 W kg−11.4\,\mathrm{W\,kg^{-1}}, and by what factor does it fall short of a growing E. coli's 103 W kg−110^3\,\mathrm{W\,kg^{-1}}?

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