Chemistry
Chemistry, 28.08.2019 11:30, evere11605

What is the mass of the helium nucleus?

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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, 07.09.2019 05:21, aysenazz
Aproton, an electron, and a helium nucleus all move at speed v. rank their de broglie wavelengths from largest to smallest. write any relevant formulas you use below. a) helium nucleus, proton, electron b) helium nucleus, electron, proton c) electron, proton, helium nucleus d) proton, electron, helium nucleus e) proton, helium nucleus, electron
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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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