Physics
Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be

P/3
P
2p/ 3
3P

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Physics
An egg sinks in soft water but floats in a concentrated solution of salt because

Egg absorbs salt from the solution and expands
The density of salt solution exceeds the density of eggs
Albumin dissolves in salt solution and egg becomes lighter
Water has high surface tension

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