True because cooler particles have less kinetic energy in them
Answer:
Explanation:
So we want the speed to go from 25 m/s to 0 m/s in 170 m, but the time needs to incorporate the reaction time, so the slowing down will not start until .68 s pass. Or, in other words, the train will travel an extra 25 m/s * .68 s = 17 m. This means, instead of 170 m to slow down it has 153. Hopefully that makes sense. With this information we can use the equation vf^2-vi^2=2ad. If that equation is unfamiliar you need to get a better handle on your physics equations.
Anyway, let's plug in.
vf = 0 m/s
vi = 25 m/s
a is what we're trying to find
d = 153 m
vf^2-vi^2=2ad
a = (vf^2-vi^2)/(2d)
Can you handle figuring it out from there? or if there is something you don't understand let me know.
The answer to that is mechanical waves
Displacement is how much of a liquid (typically water for simplicity in the metric system) is pushed aside when another object is completely submerged. For example, when a 100mL of water has a block placed into it, and rises to 150mL, the block has displaced the water.
<span>Paleontology and facies analysis proved to be useful tools in activities of intelligence and investigation on some criminal cases, as well as in in-court activities, thus defining the “forensic paleontology” area of study.
</span><span>Forensic wood anatomists are able to glean important clues on both macro- and microscopic levels — from matching growth patterns in large pieces of lumber to analyzing the physical characteristics of a splinter-sized fragment.</span><span>
</span>