alleryMolecules in a gas move at speeds of the order of the speed of:
ALight
BSight
CShock
DSound
Answer & Solution
Correct answer: D. Sound
1. Yet a leaking gas takes time to cross a room.
2. Collisions slow the net spread.
3. Their speeds are of the order of the speed of sound.
_Source: syllabus Physics, Ch 12 'Kinetic Theory'_
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