Physics
To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor

Can be of any shape
Should be made of a good conductor but can be of any shape
Should be made of a good conductor like copper with sharp-pointed edges
Should be in the form of a vertical rod

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Physics
Kinetic energy depends on

The mass of the moving body
Both mass and velocity of the moving body
The pressure of the moving body
The velocity or speed of the moving body.

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