Physics
Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?

Force and rate of change of linear momentum
Pressure and Young's modules
Planck's constant and Angular momentum
Impulse and moment of force

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Physics
The sensation of weightlessness in a spacecraft in an orbit is due to the

Acceleration in the orbit which is equal to the acceleration due to gravity outside
Absence of gravity outside
Presence of gravity outside but not inside the spacecraft
Fact that spacecraft in the orbit has no energy

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