Strength of Materials
Which of the following do not have identical dimensions?

Momentum and impulse
Moment of a force and angular momentum
Torque and energy
Torque and work

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Strength of Materials
Kinetic friction is the

Ratio of limiting friction and normal reaction
Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction
The friction force acting when the body is just about to move
The friction force acting when the body is in motion

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