Physics, 19.01.2020 12:31 falconsfan20182
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. a)what fraction of the initial kinetic energy is converted to the final potential energy? express your answer numerically. ufki =b)what happens to the "lost" energy? choose the correct answerit has been transformed into thermal energy of the spores and surrounding air. it has been transformed into thermal energy of the spores and potential energy of surrounding air. it has been transformed into potential energy of the spores and kinetic energy of surrounding air. it has been transformed into potential energy of the spores and surrounding air.
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A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?
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An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.
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Mosses don't spread by dispersing seeds; they disperse tiny spores. the spores are so small that th...
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