Let&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mover accent="true"><mi>F</mi><mo stretchy="true">¯</mo></mover></mrow></math>&nbsp;be the force acting on a particle having position vector&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mover accent="true"><mi>r</mi><mo>→</mo></mover><mtext>&nbsp;</mtext><mo>&amp;</mo><mtext>&nbsp;</mtext><mover accent="true"><mi>T</mi><mo>→</mo></mover></mrow></math>&nbsp;be the torque of this force about the origin.&nbsp; Then

Which of the following fusion reactions will not result in the net release of energy?I.&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi>Li</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>6</mn></mmultiscripts><mo>&nbsp;</mo><mo>+</mo><mo>&nbsp;</mo><mmultiscripts><mi>Li</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>6</mn></mmultiscripts></math>II.&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi>He</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>4</mn></mmultiscripts><mo>&nbsp;</mo><mo>+</mo><mo>&nbsp;</mo><mmultiscripts><mi>He</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>4</mn></mmultiscripts></math>III.&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi mathvariant="normal">C</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>12</mn></mmultiscripts><mo>&nbsp;</mo><mo>+</mo><mo>&nbsp;</mo><mmultiscripts><mi mathvariant="normal">C</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>12</mn></mmultiscripts></math>IV.&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi>Cl</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>35</mn></mmultiscripts><mo>&nbsp;</mo><mo>+</mo><mo>&nbsp;</mo><mmultiscripts><mi>Cl</mi><mprescripts>&nbsp;</mprescripts><none>&nbsp;</none><mn>35</mn></mmultiscripts></math>

The ratio of the density of oxygen nucleus&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mo>(</mo><mn>8</mn><mn>16</mn></msubsup><mi mathvariant="normal">O</mi><mo>)</mo></math>&nbsp;and helium nucleus&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mo>(</mo><mn>2</mn><mn>4</mn></msubsup><mi>He</mi><mo>)</mo></math>&nbsp;is

In a long hollow vertical metal pipe a magnet is dropped. During its fall, the acceleration of magnet

Let $\bar{F}$ be the force acting on a particle having position vector $\vec{r} & \vec{T}$ be the torque of this force about the origin. Then

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Let F¯ be the force acting on a particle having position vector r→ & T→ be the torque of this force about the origin. Then

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Let $\bar{F}$ be the force acting on a particle having position vector $\vec{r} & \vec{T}$ be the torque of this force about the origin. Then