Physics
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?

Hyper–parabolic
Great circle
Parabolic
Circle

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Physics
Negative feedback in amplifiers

Increases bandwidth and decreases noise
Decreases bandwidth and decreases noise
Increases bandwidth and increases noise
Decreases bandwidth and increases noise

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Physics
Which is evidence that supports the dynamo theory?

Granite and basalt conduct electricity
Earth's core contains a large amount of iron
Convection occurs in Earth's inner core
Earth's outer core contains liquid that conducts electricity

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