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1. Calculate the rms speed of helium atoms near the surface of the Sun at a temperature of about `6000\ K`.
1. Calculate the rms speed of helium atoms near the surface of the Sun at a temperature of about 6000\ K. `v_(rms) = sqrt((3kT)/m)`
`v_(rms) = 6 times 10^3\ m//s`
Given:
`T = 6000 K`
Knowns
`m_(He) = 4\ u = 4 times 1.66 times 10^(-27)\ kg`
`k = 1.38 times 10^(-23)\ J//K`
Equation:
`v_(rms) = sqrt((3kT)/m)`
Solution:
`v_(rms) = sqrt((3(1.38 times 10^(-23)\ J//K)(6000 K))/(1.38 times 10^(-23)\ J//K))`
`v_(rms) = 6 times 10^3\ m//s` |