The best design for this experiment is to number the items from 1 to 1,200 and then choose random numbers in the table of random digits (second option).
<h3>How to use a table of random digits?</h3>
These tables are used to randomly assign items or subjects into groups when experimenting. The best way to use these tables are:
- Give each item or participant a number.
- Take a lot at the table and choose a number.
- If this number is the same that the number assigned to an item or participant classify it in the first group.
- Keep selecting.
Based on this, for this experiment the steps are:
- Number the items from 1 to 1,200.
- Identify numvers in the table.
- Assign the first 400 items to the process 1 group.
- Repeat the process for the other two groups.
Learn more about experiments in: brainly.com/question/11256472
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Answer:
- <em>1. The mass of an atom is concentrated at the nucleus.</em>
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- <em>3. Positive charge is condensed in one location within the atom.</em>
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- <em>4. The majority of the space inside the atom is empty space.</em>
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- <em>6. The atom contains a positively charged nucleus.</em>
Explanation:
When J.J Thmpson discovered the electron, he depicted the atom by the plum pudding model: a solid dough of homogeneously distributed positive charge (the pudding) containing negatively charged electrons (the plums).
Later, the scientist <em>Ernest Rutherford</em>, with its experiment of the gold foil experiment showed that the subatomic particles where not all concentrated in a solid part.
When a thin gold foil was bombarded with alpha particles (positively charged nuclei of helium atoms), most of the particles went through the gold sheet, with little deviation, but some particles bounded with a high deviation.
Such few high deviations were explained by the fact that there was a heavy region in the atom (the core or nucleus) with the positive charge that repelled the positively charged alpha particles.
Thus, <em>the mass of the atom was conentrated at the nucleus</em> (choice 1), where the positive charge is distributed in one location, which is the nucleus (not over the entire atom, just on the nucleus) discarding the choice number 2 (that a positive charge is spread equally over the atom) and proving choices 3 (<em>the positive charge is condensed in one location within the atom</em>) and 6 (<em>the atom contains a positively charged nucleus</em>).
Since most of the particles indeed went through the nucleus, this nucleus has to occupy little space, and most of the atom was empty space, proving choice 4 (<em>the majority of the space inside the atom is empty space</em>).
The answer would be the aftershock
You have the correct answer
Answer:
C. I think
Please let me know if it is right or wrong.
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