Physics
Hydraulic brakes work on the principle of

Newton's law
Pascal's law
Bernoulli's theorem
Thomson's law

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Physics
An integrated circuit is more advantages than a coventional circuit because

A faulty part of a conventional circuit may be difficult to locate and repair
All listed here
If a part of the integrated circuit fails the entire circuit is simply replaced
They make the electric equipments more reliable and easier for servicing

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