Physics
If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is

Surface area of the bottom of the vessel
Acceleration due to gravity at the bottom of the vessel
Density of the liquid
Height of the liquid column

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Physics
What is the direction of torque?

Opposite to the direction of applied force
Perpendicular to the direction of applied force
Same as the direction of applied force
Parallel to the radius

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Physics
A dynamo is a device which

Creates mechanical energy
Converts electrical energy into mechanical energy
Creates electrical energy
Converts mechanical energy into electrical energy

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