Physics
Magnetic field lines about a current-carrying wire

Both of these
None of these
Circle the wire in closed loops
Extend radially from the wire

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Physics
Absolute Zero is defined as

The temperature at which all molecular motion ceases
At which water boils at 298K
At which the volume becomes zero
At which liquid Helium boils

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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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