Physics
If an object is thrown upwards, what will be its velocity, when it reaches its maximum height?

20 m/s
0 m/s
4.9 m/s
14.7 m/s

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Physics
Siphon will fail to work if:

Both its limbs are of unequal length.
The level of the liquid in the two vessels are at the same height.
The densities of the liquid in the two vessels are equal.
The temperature of the liquids in the two vessels are the same.

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