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At sea level, a nitrogen molecule in air...

At sea level, a nitrogen molecule in air has an average translational kinetic energy of `6.2 xx 10^(-21)J.` it mass is `4.7 xx 10^(-26)kg.` If the molecule shoots up straight without resistance, it will rise to a height of :

A

1.35 km

B

13.5km

C

135km

D

1350km

Text Solution

Verified by Experts

The correct Answer is:
B
KE of the molecule is converted into its PE, i.e.,
`mgh = 6.2 xx 10^(-21) J or h = (6.2xx10^(-21))/((4.7 xx 10^(-26) xx 9.8) ~~ 13.5km`
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