Fast-moving air molecules have
(a) greater kinetic energy.
(b) greater molecular collisions.
(c) warmer temperatures.
(d) All of these.
The correct option for the statement “Fast-moving air particles have”.
Answer to Problem 2RAT
The correct option for the statement “Fast-moving air particles have” is option (d).
Explanation of Solution
The fast-moving air particles have high velocity and as the kinetic energy of the matter depends directly as the square of its velocity in the space, so if the matter has more velocity, then it will have greater kinetic energy.
The air molecules have a certain distance between them as per the kinetic theory of gases. So, these particles are in random motion and do not lose energy after collision. If the kinetic energy of the air molecules rises, then there will be more collision between them due to a certain distance of separation between them.
Due to more collisions between the air molecules, some energy in the form of heat is evolved that raises the temperature of the air molecules. So, the fast-moving air particles become warmer.
Conclusion:
Therefore, the correct option for the statement “Fast-moving air particles have” is option (d).
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