A vessel contains 6 xx 10^(26) molecules/m^(3). Mass of each molecule is 6 xx 10^(-27) kg. Assume that, on an average, one-sixth of the molecules move with a velocity 10^(3) ms^(-1) perpendicularly towards each wall. If the collisions with the walls are perfectly elastic, then which of the following statements are correct?

A vessel contains 6 xx 10^(26) molecules/m^(3). Mass of each molecule

1.	A vessel contains 6 xx 10^(26) molecules/m^(3). Mass of each molecule is 6 xx 10^(-27) kg. Assume that, on an average, one-sixth of the molecules move with a velocity 10^(3) ms^(-1) perpendicularly towards each wall. If the collisions with the walls are perfectly elastic, then which of the following statements are correct?
Answer» CHANGE in momentum of each molecule is `12 xx 10^(-24)` kg `ms^(-1)` in each collision The number of MOLECULES hitting 1 `m^(2)` of the WALL per second is `10^(29)` Total change in momentum of all molecules is `10^(31)` SI units The number of molecules hitting ONE square metre of the surface is `6 xx 10^(29)` Answer :A::B