Mosses dont spread by dispersing seeds; they disperse tiny spores. The spores are so small that they
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Mosses don’t spread by dispersing seeds; they disperse tiny spores. The spores are so small that they will stay aloft and move with the wind, but getting them to be windborne requires the moss to shoot the spores upward. Some species do this by using a spore-containing capsule that dries out and shrinks. The pressure of the air trapped inside the capsule increases. At a certain point, the capsule pops, and a stream of spores is ejected upward at 3.6 m/s, reaching an ultimate height of 20 cm. What fraction of the initial kinetic energy is converted to the final potential energy? What happens to the “lost” energy?
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Related Book For
College Physics A Strategic Approach
ISBN: 9780134779218
4th Edition
Authors: Randall D. Knight, Brian Jones
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