H2P-659

Mean kinetic energy and temperature

H2 Physics · JC 2 · Medium · Mean kinetic energy and temperature

An ideal gas has density 0.80 kg m

^{-3}

at a pressure of

1.2\times10^{5}

Pa. Using

p = \tfrac{1}{3}\rho c_{\text{rms}}^{2}

, what is the root-mean-square speed

c_{\text{rms}}

of its molecules?

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