Question

a. What is average kinetic energy of atoms at absolute zero?
b. Can an atom have negative kinetic energy?
c. Is it possible to have a temperature less than absolute zero? explain

Are my answers correct? My answers
a. 0J
b. No
c. No, not sure how to explain

Answer 1

@phi @.Sam.

Answer 2

E=(3/2)kT

Answer 3

E=average kinetic energy of an atom of gas

Answer 4

k=Boltzman constant

Answer 5

T=temperature in kelvin scale

Answer 6

absolute zero means
T=0

Answer 7

can u tell me k=?

Answer 8

c my above equation

Answer 9

if T is positiv,, then k wil b positive

Answer 10

if T is negative, then k will b negative

Answer 11

anyway do u hv idea abt temperature in kelvin scale

Answer 12

T

Answer 13

the value of T starts frm 0 and goes upward

Answer 14

the value of T can never n negative

Answer 15

Savy
a. At the risk of sounding "tautological" this is the "zero point energy" which comes, I think, from quantum and possibly the Fermi energy. At absolute zero, all the particles in a Fermi distr sort of stack up to a highest energy level.
b. Since KE is half mass times velocity squared, that would be down to the EFFECTIVE MASS of the atom in question. Don't know, in other words. I've heard of a thing in thermo called "NEGCITEMP" which I think refers to negative temperatures.
http://perendis.webs.com

Answer 16

on NEGCITEMP etc. Source text is "Heat and Thermo" by Mark W Zemansky. A just about readable thermo book.
I also think that NT creeps in somewhere near LASERS.
And, on the subject of V V V cold energy, there's always the Nobel winning SUPERCONDUCTIVITY.
(Abandon hope of sense, all yee who enter quantum mechanics, relativity, particle physics, or "STRANGENESS". Bad joke .... I don't know - Heisenberg)

Answer 17

A. 0 because temperature is zero and 3/2 kT
B. No, because T cannot be negative, its in Kelvins.
C. In Kelvin, it is not possible to have a negative temperature because 0K is defined as the minimum possible temperature.