OBJECTIVE FORESTRY

FORESTRY

PLANT AND WOOD ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the kelvin temperature that represents a condition of no molecular motion?
A
-20
B
0
C
32
D
50
Explanation: 

Detailed explanation-1: -At zero kelvin (minus 273 degrees Celsius) the particles stop moving and all disorder disappears. Thus, nothing can be colder than absolute zero on the Kelvin scale.

Detailed explanation-2: -The Kelvin Scale It is based on molecular motion, with the temperature of 0K, also known as absolute zero, being the point where all molecular motion ceases.

Detailed explanation-3: -At absolute zero (i.e. 0 K) vrms becomes zero. ie, all molecular motion stops or the velocity of molecules becomes zero.

Detailed explanation-4: -On the Kelvin scale, absolute zero (0 K) is the temperature at which the volume of a gas becomes zero. It is therefore the lowest possible temperature, or the absolute zero on any temperature scale. Zero on the Kelvin scale is therefore-273.15oC.

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