Air expands when it _______________.
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Humidity is a measure of the _______________.
Sound travels at a speed of 333 m/s in the air, thus, in 1 s, a distance of 333 m is travelled by
Who proposed Continental drift theory?
Friction is caused by the ______________ on the two surfaces in contact.
If a body is moving on a circular path, what is its average velocity if it completes one cycle in one second?
Bubbles of air rise up through liquids due to
What is the unit of electric resistance?