Question

Calculate the rms speed of helium atoms near the surface of the Sun at a temperature of about 5100 K. Express your answer to two significant figures and include the appropriate units.

Answer 1

Answer:

$V_{rms}=5.6*10^3m/s$

Explanation:

From the question we are told that:

Temperature $T=5100K$

Generally the equation for RMS Speed is mathematically given by

 $V_{rms}=\sqrt{\frac{3kT}{m}}$

Where

 $K=Boltzman's constant$

 $K=1.38*10^{-23}$

And

 $M=molecular mass$

 $M=4*1.67*10^{-27}$

 $V_{rms}=\sqrt{\frac{3(1.38*10^{-23})5100}{4*1.67*10^{-27}}}$

 $V_{rms}=5.6*10^3m/s$