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iris [78.8K]
4 years ago
14

Which statement is true about nuclear fusion? it is caused by the same process that causes nuclear fission.

Physics
2 answers:
Sergeeva-Olga [200]4 years ago
6 0

The correct statement about nuclear fusion is the last one: "it produces nearly all the elements that are heavier than helium". Nuclear fusion is the process of combination of two smaller atoms into a larger one. It requires a high activation energy, which is reached in the stars. Elements from He to Iron were formed in the Sun, but larger elements require a higher energy and are formed inside supernovas.

san4es73 [151]4 years ago
5 0

Answer:

It produces nearly all the elements that are heavier than helium.

Explanation:

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Via half-life equation we have:


A_{final}=A_{initial}(\frac{1}{2})^{\frac{t}{h} }


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A_{final}=50(\frac{1}{2})^\frac{12}{4}=50(\frac{1}{2})^{3}=50(\frac{1}{8})=6.25g


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Consider a 40,000 km steel pipe in the shape of a ring that fits snuggly all around the circumference of the Earth. We are heati
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Answer:

The Height is  H = 70.02 m

Explanation:

We are given that the

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from what we are told in the question the circumference of the circle is = 40,000 Km

  This means that the Radius would be :

         Let C denote the circumference

      So  

               C = 2 \pi r

      =>     r = \frac{C}{2 \pi}

               r = \frac{40,000}{2 \pi } = \frac{40,000*10^{3}}{2 *3.142}  = 6.365*10^6 m

We are told that 1-meter bar of steel that increases its temperature by 1 degree C will expand 11*10^{-6} meters

Hence

       The final length would be

                            40000*10^3 *(T + \alpha  )

Where T is the change in  temperature  \alpha is the Coefficient of linear expansion for steel

  let L_{final} denote the final length

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        L_{final} =40000*10^{6} *[1+ 11*10^{-6}]

                  = 40000440 \ m

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         Height(H) \ = \frac{change \ in \ radius \ }{2 \pi}

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4 years ago
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Answer:

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