Two similiar barrels A and B with the same radius and mass roll down the same slope starting at the same instant.Barrel A is filled with liqued water, and barrel B is filled with ice of equal mass(Barrel B slightly longer than barrel A to compensate for the slightly larger density of liquid water)
which barrel reaches the bottom of the slope first?
and why?
I know its a dumb question but I wonder..
Which keeps you drier , walking or running in the rain?
in other words, do you get wetter if you run or walk in the rain? .(the distance stable)
and why?
we go any further, it's important to get a clear idea of what time reversal symmetry really means. At the simplest level, we may think of the laws of physics as equations involving a time variable , and say that they are symmetric under time reversal if given any solution, and making the substitution , we obtain another solution.
http://math.ucr.edu/home/baez/time/time.html
What does t (and - t) stand for in physics ?
only time ?
I understand, that is, this principle says that if an event exists that could give rise to a paradox, then the probability of that event happening is zero..
Is it logic ?
A truck driver carrying chickens to market is stopped at a weighing station.He bangs on the ide of the truck to frighten the chickens so that they will fly up and make the truck lighter.Will his scheme work?Does it make any difference if the truck is open or closed?
0.080 kg soccer ball is released from rest at a height of 1.24 m above the floor and after one bounce reaches a maximum height of 0.70 m. determine the amount of energy dissipated?
commentary:my questions are not homework..because, I am not a student:)
some researches say ;conspiracy theory adherents claim that a small group of international elites(a.k.a Secret societies) controls and manipulates states , economy and media organizations worldwide.
what do you think?
Thanks in advance.
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