Numerical value of Boltzmanns constant is______________?
Correct answer: D. 1.38 x 10^-23JK-1
- A. 1.38 x 10^-31JK-1
- B. 3.18 x 10^-31JK-1
- C. 3.18 x 10^-23JK-1
- D. 1.38 x 10^-23JK-1
Explanation
Boltzmann's constant has the value k = 1.38 x 10^-23 J K^-1, linking temperature with the energy of individual particles. The unit J K^-1 is required because it represents energy per kelvin. The likely trap is 1.38 x 10^-31 J K^-1, where the exponent has been incorrectly changed from -23 to -31.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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