Physics
The recoiling of gun is an example of which of the following?

Law of Conservation of Linear Momentum
Law of Conservation of Angular Momentum
Conversion of Kinetic Energy to Potential Energy
Law of Conservation of Energy

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Physics
The wall of a dam is broader at the base

To withstand pressure that increases in a horizontal plane
To withstand pressure that is increased with atmospheric pressure
To withstand pressure that increases with depth
Because streamlining is required

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