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How many rectangles can be formed in a 72 - sided regular polygon by joining its vertices

Try my set : Let's play with polygons

An overhead pipe spews out water at a constant initial speed of \(15\text{ ms}^{-1}\), vertically downward. In a fraction of a second, the water hits the floor ...

Expansion of our universe can be considered as an adiabatic process for the photons of the microwave background radiation.Wavelength of photons grows linearly with the radius of the Universe ...

How Many Right - angled triangles can be formed by joining the vertices of a 1000 - sided regular polygon.

Try my set : Let's play with polygons & circles

We consider the case of a sound wave propagating in air.

Note that Laplace correction applies to the considered wave and that the processes are adiabatic in all respects.

The ...

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