Physics
If the diameter of a capillary is doubled, then the rise of water in it will be

Two times
Half
Four times
No change

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Physics
A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that

The metal ball suffers greater change in momentum
Both suffer the same change in momentum
The rubber ball suffers greater change in momentum
The initial momentum of the rubber ball is greater than that of the metal ball

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