A nucleus moving with a velocity \(\vec{v}\) emits an \(\alpha\)-particle. Let the velocity of t...

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A nucleus moving with a velocity \(\vec{v}\) emits an \(\alpha\)-particle. Let the velocity of the \(\alpha\)-particle and the remaining nucleus be \(\vec{v}_1\) and \(\vec{v}_2\) and their masses be \(m_1\) and \(m_2\) :br /(A) \(\vec{v}, \vec{v}_1\) and \(\vec{v}_2\) must be parallel to each otherbr /(B) None of the two of \(\vec{v}, \bar{v}_1\) and \(\vec{v}_2\) should be parallel to each other.br /(C) \(\vec{v}_1+\vec{v}_2\) must be parallel to \(\vec{v}\)br /(D) \(m_1 \vec{v}_1+m_2 \vec{v}_2\) must be parallel to \(\vec{v}\)
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