The work done by the Coulomb force will be "
".
Let us define the required work done to move that alpha particle to the one of the mid point of the side length as follows.
→ 
→ 
→ 
→ 
→ 
Thus the above answer is appropriate.
Learn more about work done here:
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Answer:
B.Include as many details as possible when writing the conclusion.
This helps improve the quality of their experiment..
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Halogens are highly reactive nonmetal elements in group 17 of the periodic table. ... Halogens are among the most reactive of all elements. They have seven valence electrons, so they are very “eager” to gain one electron to have a full outer energy level.
Answer:
option E
Explanation:
given,
Parallax angle(d) = 1 arcsecond
using Parallax formula

p is the parsecs angle which is measured in 1 arcsecond
d is the distance in parsec
now,



we know,
1 parsec = 3.26 light year
hence, the answer will be option E