You're right. The molecules in a jar of liquid have a wide range
of different speeds. The average of all of their kinetic energies
is what we sense as the liquid's temperature.
Within the jar, there's conduction and convection going on
constantly. Tiny warm samples conduct heat to the tiny cool
samples next to them, so that the temperature stays uniform
throughout the jar.
When some of the liquid evaporates, it's the fastest molecules that
escaped from the surface and never returned to the jar. With them
went their little bit of kinetic energy, so the total kinetic energy of the
molecules that got left behind decreased slightly, and since it was
the most energetic ones that departed, the average KE of those that
remained also decreased. Once this new average gets uniformly
distributed throughout the jar, it'll show up as a decrease in temperature.
Answer:
the thickness of the dam should be the same if the level of water does not change.
Explanation:
the thickness of dam depends on the pressure of water that has to withstand.
Since the pressure exerted by the water depends only on the depth of the lake and not the length of the lake
P =1/2 *ρ*g*h ,
where P= pressure exerted by the water on the dam, ρ= density of water , g= gravity , h= depth of the lake
Then if the lake were smaller and the depth remains the same, the thickness of the dam should be the same
<span>C. plate tectonics....</span>
Answer:
Explanation:
It is pertinent to note that modifier 26 is appropriate when the physician supervised or interprets a diagnostic test, even if he or she did not perform the test personally. Also do not append modifier 26 if there is a code to describe only the professional/physician component of a given service (examples are 93010 Electrocardiogram, routine ECG with at least 12 leads, interpretation and report only).
