Examlex
The speed of sound in air is 340 m/s.The shortest air column, closed at one end, which will resonate to a 512 Hz tuning fork is approximately:
Lithosphere
The rigid outer layer of the Earth, composed of the crust and the upper part of the mantle.
Biosphere
The spherical zone that includes life and all of the places life can exist on, below, and above Earth’s surface.
Rapid City Flood
A catastrophic flood event that occurred in Rapid City, South Dakota, in 1972 due to heavy rainfall.
Flash Flood
A local and sudden flood of short duration, such as that which may follow a brief but heavy rainfall.
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