Physics
Tensional forces normally cause which one of the following?

Normal faults
Strike-slip faults
Reverse faults
Thrust faults

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Physics
Water pipes in hilly areas often burst on a cold frosty night, because

None of these
The material of which pipes are made contracts due to cold and so breaks
Frost makes the pipes rusty, so they break
Water in the pipes freezes and on freezing water expands, so pipes break

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Physics
Negative feedback in amplifiers

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

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