1. Bone has a Young’s modulus of about
1.8 × 1010 Pa . Under compression, it can
withstand a stress of about 1.68 × 108 Pa before breaking.
Assume that a femur (thigh bone) is 0.54 m
long, and calculate the amount of compression
this bone can withstand before breaking.
Answer in units of mm.
2. If a 1-megaton nuclear weapon is exploded
at ground level, the peak overpressure (that
is, the pressure increase above normal atmospheric pressu
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