Physics
A car parked in the sun with its windows closed gets terribly hot inside. This is due to

The good conducting power of the metal body
The greenhouse effect
The heat emitted by the engine
The double layered wind shield

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Physics
Stationary wave is formed by

Two waves of same frequency travelling in the opposite direction
Two waves of same frequency travelling in the same direction
A transverse wave superposing a longitudinal wave
Two waves of the same speed superposing

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