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A gas molecule of mass 10^(-27) kg is mo...

A gas molecule of mass `10^(-27)` kg is moving with a velocity of `18 kmh^(-1)`, calculate the K.E. in S.I. units.

Text Solution

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`m= 10^(-27) kg `
`v = 18 km//h = 5 m//s : K.E. = 5 m v^2 = 1/2 xx 10^(-27) xx (5)^2 = 12.5 xx 10^(-27) J` .
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