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.
Answers: 2
Physics, 21.06.2019 22:30
Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations. in what way do laboratory experiments primarily differ from other forms of scientific investigations? a. a laboratory experiment is the only accepted form of investigation within the scientific community. b. studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments. c. laboratory experiments involve the identification and control of variables. d. data can only be generated through laboratory experiments, not other forms of investigation.
Answers: 3
Physics, 22.06.2019 06:30
Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.
Answers: 2
Physics, 22.06.2019 12:30
If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather
Answers: 2
Physics, 22.06.2019 15:30
What are the north and south poles of a solenoid change with?
Answers: 1
Mosses don't spread by dispersing seeds; they disperse tiny spores. the spores are so small that th...
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