Physics
A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be

A parabola
A circle
A horizontal straight line
A vertical straight line

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Physics
Air moves from the region where the air ________

Humidity is high to the region where the humidity is low
Humidity is low to the region where the humidity is high
Pressure is low to the region where the pressure is high
Pressure is high to the region where the pressure is low

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