Biology

Biology, 16.07.2019 17:30, kaziyahf2006

What statement is true about gold and helium

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Physics, 26.06.2019 19:50, whitethunder05

Ernest rutherford (the first new zealander to be awarded the nobel prize in chemistry) demonstrated that nuclei were very small and dense by scattering helium-4 nuclei from gold-197 nuclei. the energy of the incoming helium nucleus was 8.00\times 10^{-13}~\text{j}8.00×10 −13 j, and the masses of the helium and gold nuclei were 6.68\times 10^{-27}~\text{kg}6.68×10 −27 kg and 3.29\times 10^{-25}~\text{kg}3.29×10 −25 kg, respectively (note that their mass ratio is 4 to 197). if a helium nucleus scatters to an angle of 120^\circ120 ∘ during an elastic collision with a gold nucleus, what is the final kinetic energy of the helium nucleus?

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Physics, 14.07.2019 21:00, kekeke68

Helium is a naturally occurring, lighter--air gas that is used commercially to fill baloons. which statement best describes how science was impacted by society in regards to helium? a. helium has been mass produced to meet consumer demands for parties b. helium has been proven to be lighter than air c. scientists observed that helium will cause balloons to float d. scientists have found that helium is naturally occurring

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History, 16.07.2019 17:30, gilbertnessa2107

What statement is true about gold and helium

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Physics, 30.10.2019 03:31, stephaniesmile8

Ernest rutherford (the first new zealander to be awarded the nobel prize in chemistry) demonstrated that nuclei were very small and dense by scattering helium-4 nuclei (4he) from gold-197 nuclei (197au). the energy of the incoming helium nucleus was 7.32 ✕ 10−13 j, and the masses of the helium and gold nuclei were 6.68 ✕ 10−27 kg and 3.29 ✕ 10−25 kg, respectively (note that their mass ratio is 4 to 197. assume that the helium nucleus travels in the +x-direction before the collision.) if a helium nucleus scatters to an angle of 110° during an elastic collision with a gold nucleus, calculate the helium nucleus' final speed (in m/s) and the final velocity (magnitude in m/s and direction counterclockwise from the +x-axis) of the gold nucleus.

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