Clausius statement of the second law of thermodynamics: no process is possible whose sole result is the transfer of heat from a cooler to a hotter body. kelvin statement of the second law of thermodynamics: no process is possible whose sole result is the absorption of heat from a reservoir and the conversion of this heat into work. a) show that if the clausius statement of the second law of thermodynamics were false, then the kelvin statement of the second law would be false. b) show that if the kelvin statement of the second law of thermodynamics were false, then the clausius statement of the second law would be false. if you can complete parts a) and b), you will have shown that the clausius and kelvin statements of the second law are equivalent.

i would think it's food chain

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.