Pieces gain in the explosion
A 160g trick baseball is thrown at 75km/hr. It explodes in flight into two pieces, with a 38g piece continuing straight ahead at 86km/h. How much energy do the pieces gain in the explosion?
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"antiparallel sugar-phosphate backbones" in DNA.
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A cardinal (Richmondena cardinalis) of mass 4.00×10-2kg and a baseball of mass 0.143kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p_c of momentum to the magnitude p_b of the baseball's momentum?
Explain at least two ways institutional, temporal, and historical contexts of forecasts affect their accuracy.
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