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A stationary particle of rest mass $M$ decays into $N$ particles of rest masses $m_1 , m_2 , ... , m_{N}$, such that

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The lower end of a uniform inextensible rope of mass $m$ and length $\ell$ is attached to a block of mass $M$ placed on a horizontal floor. The coefficient of ...

There are 2 similar communicating vessels, each contains 2 different liquids that aren't miscible in each other. The liquids are separated by a valve and at the same height ...

In recent years, the popularity of smartphones has led to the emergence of "heads-down tribes". Recent studies have found that when playing with mobile phones, it is possible to bear ...

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