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Five gas molecules chosen at random are ...

Five gas molecules chosen at random are found to have speed of `500 , 600, 700, 800 and 900 m//s`. Find the rms speed. Is it the same as the average speed ?

Text Solution

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The correct Answer is:
A, D
`v_(av)= (500 + 600+ 700+ 800+ 900)/5= 700 m//s`
`v_(rms) = sqrt (((500)^2 + (600)^2 + (700)^2)+ (800)^2 + (900)^(2))/(5) = 714 m//s`.
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