Created by StemPy LabWhy can mountains on Mars be much taller than those on the Earth?
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← A wooden plank is 12 cm wide and 4 cm thick. The sag of a beam goes as 1/bd³. How many times less does it sag when placed on its narrow edge (depth 12 cm) than when laid flat (depth 4 cm)?A bridge that has carried traffic for many decades is declared unsafe even though no one has overloaded it. The main reason is →
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