Physics
The quantity that is not conserved in an inelastic collision is

Kinetic Energy
All of these
Momentum
Total Energy

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Physics
Siphon will fail to work if:

The densities of the liquid in the two vessels are equal.
Both its limbs are of unequal length.
The temperature of the liquids in the two vessels are the same.
The level of the liquid in the two vessels are at the same height.

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Physics
What is the direction of torque?

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

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