Physics, 04.02.2020 09:53, nwalker916
Which best explains the relationship between evaporation and temperature?
a) a liquid evaporates slower at lower temperatures because the molecules are more spread apart and are not pushed as easily from the liquid’s surface.
b) a liquid evaporates faster at lower temperatures because the attractions are decreased and more particles can escape the surface of the liquid.
c) a liquid evaporates slower at higher temperatures because the vapor pressure of the liquid is higher, so fewer molecules can escape the surface.
d) a liquid evaporates faster at higher temperatures because more particles have a higher speed and can overcome attractions in the liquid.
Answers: 1
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Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
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One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?
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Which best explains the relationship between evaporation and temperature?
a) a liquid evapora...
a) a liquid evapora...
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