Physics
Hertz is a unit for measuring

Intensity of waves
Wavelength
Clarity of waves
Frequency of waves

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Physics
Which of the following occurred first ?

Guglielmo Marconi sent out the first wireless signals
Wright Brothers successfully flew an aircraft
Albert Einstein propounded the General Theory of Relativity
Max Planck unveiled the Quantum Theory

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

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

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