Question

Suppose you had 10 identical molecules enclosed by a box. At a given instant, one molecule has an energy of 100 Joules, and the others are all stationary. (A) What is the average kinetic energy of the 10 molecules

Answer 1

the average kinetic energy of the 10 molecules is 10 J.

Step-by-step explanation:

Given;

energy on one molecule in motion, E = 100 J

number of molecules, n = 10

(A) The average kinetic energy of the 10 molecules

since the remaining 9 molecules are at rest, their kinetic energy = 0

`E_(Avg) = (E_1 + E_9)/(10) \\\\E_(Avg) = (100J+ 0)/(10) \\\\E_(Avg) = (100J)/(10) \\\\E_(Avg) = 10J`

Therefore, the average kinetic energy of the 10 molecules is 10 J.