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ASHA 777 [7]
2 years ago
5

What makes this lever effective?

Chemistry
1 answer:
ser-zykov [4K]2 years ago
7 0
D because the rock is making it lean less to the man so that means the rock has more mass
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Write nuclear symbols for each of the isotopes Carbon-14 Cobalt-60 Gold-197 Uranium-235
Marina CMI [18]

Answer and explanation:

The nuclides with the same atomic number, but different mass numbers are isotopes.

So, in this case, each species will have the same atomic number and a different mass number, that will be the same that it is written in the name of the element:

\begin{gathered} -\text{ Carbon-14:}C_6^{14} \\  \\ -\text{ Cobalt-60: }Co_{27}^{60} \\  \\ -\text{ Gold-197:  }Au_{79}^{197} \\  \\ -\text{ Uranium-235: }U_{92}^{235} \end{gathered}

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1 year ago
What are devices that move atomic nuclei at extremely high speeds
zloy xaker [14]
Particle accelerators is your answer 
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3 years ago
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With reference to He-4 (or the diagram), explain the term isotopes.
boyakko [2]

Answer:

Isotopes are basically atoms of an element that have an unequal number of neutrons and protons. Of course the proton number remains the same, but the neutron number either decreases or increases, which leads to an overall change in mass. However, no chemical properties of the atom/element are changed as the electrons are the same number and do not react. In regards to Helium 4, the original number of neutrons in Helium is 2, and protons 2 as well. We see an equal number of neutrons and protons, hence an unchanged mass, and the element is <em>not</em> an isotope.

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3 years ago
Megan prepares a pitcher of lemonade by adding a quarter cup of granular sugar to the mixture. Which action should she take so t
Monica [59]
The answer will be C
3 0
3 years ago
¿ que característica tiene el conocimiento científico ?
saw5 [17]

Answer: El conocimiento científico es un saber crítico (fundamentado), metódico, verificable, sistemático, unificado, ordenado, universal, objetivo, comunicable (por medio del lenguaje científico), racional, provisorio y que explica y predice hechos por medio de leyes.

Explanation: El conocimiento científico es un saber crítico (fundamentado), metódico, verificable, sistemático, unificado, ordenado, universal, objetivo, comunicable (por medio del lenguaje científico), racional, provisorio y que explica y predice hechos por medio de leyes.

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3 years ago
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