as a result, the net electric force experienced by each negatively charged particle is reduced to F/2. The value of q is

The value of q is

Explanation:

Given that,

Each charge = -Q

Distance between charges = L

Reduced force =

Suppose, Two particles each with a charge -Q are fixed a distance L apart as shown above. Each particle experiences a net electric force F. A particle with a charge +q is now fixed midway between the original two particles.

We know that,

The force on each end is

...(I)

If the charge q is placed at mid point then

The  force on each end charge is

....(II)

We need to calculate the value of q

Using equation (II)

Put the value of F into the formula

Hence, The value of q is

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.