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

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

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Physics
Analog synthesis refers to a technology based on

Placing brief digital recordings of live sounds under the control of a synthesizer keyboard.
Interfacing synthesizer equipment.
Representing data in terms of measurable physical quantities.
Representing physical quantities as numbers.

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