question_answer 7)

Estimate the average thermal energy of a helium atom at (i) room temperature (27°C) (ii) the temperature on the surface of the Sun (6000K), (in) the temperature of 10 million kelvin (the typical core temperature in the case of a star). 

Answer:

(i) Here, T= 27°C = 27 + 273 = 300 K Average thermal energy   (ii) At T = 6000 K, Average thermal energy     (iii) At T = 10 million K = 107 K   Average thermal energy