Physics
The spoon dropped by an astronaut in a satellite will

Fall to the floor
Remain stationary
Move tangentially away
Continue to follow the motion of the satellite

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Physics
The velocity of sound in air

Increases with decrease of temperature
Decreases with increase of temperature
Decreases with decrease of temperature
Does not depend on temperature

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Physics
Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)

The silver piece will weigh more
Weighing will depend on their masses
Both silver and gold pieces weigh equal
The gold piece will weigh more

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