This topic contains a solution. Click here to go to the answer

Author Question: A school principal tells a new teacher that the orderly classroom is quiet. Using this ... (Read 80 times)

burchfield96

  • Hero Member
  • *****
  • Posts: 610
A school principal tells a new teacher that the orderly classroom is quiet.
 
   Using this definition of order, and assuming a class of twenty pupils, enumerate possible states of the system (a state specifies each one of the twenty and whether the student is quiet or talking). Why is it so hard to have a classroom completely in order?

Question 2

RBMK reactors are inherently safe because their graphite moderator gets smaller with increasing temperature.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

zacnyjessica

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

If no one speaks, the class will be quiet. Any other way would distress the
principal. We discussed some ways the system could be less orderly in question 22 . Each
additional student who could speak seems to add more possibilities that are disorderly,
which may be quantified as in the answer to question 22
Eventually, though, the possible ways to attain disorder must decline, because by the time we
have nineteen students speaking, there are only twenty ways to do that. Finally, with twenty
students all speaking, there is just one way for this to occur. The distribution must have
peaked, we would expect somewhere midway between 0 and 20

Answer to Question 2

The decrease in size of the moderator is a problem known as positive void
coefficient. The material itself gets bigger, but so do the holes inside, so fewer neutrons are
caught. It will interact with fewer neutrons, thus leaving more of them to react, making the
reactor hotter, making more neutrons to react, etc. This is not good.




burchfield96

  • Member
  • Posts: 610
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)


pratush dev

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

For a complete list of videos, visit our video library