gary and devonte are doing an experiment with an electroscope. they bring a negatively charged rod close to the top of a charged electroscope. the two metal pieces of the electroscope were spread apart already, but now they move farther away from each other. gary says that the experiment proves that the electroscope had a negative charge before they started experiment, but devonte disagrees and said it must have had a positive charge since the metal pieces moved farther away. who is right and why?

the electroscope had a positive charge before the experiment started. the negatively charged rod attracts the electrons in the electroscope and makes the metal pieces spread further apart.

the electroscope had a positive charge before the experiment started. the negatively charged rod repels protons and makes the metal pieces spread further apart.

the electroscope had a negative charge before the experiment started. when the negatively charged rod comes near the electroscope more electrons are repelled down to the metal pieces and the metal pieces move farther away from each other.

the electroscope had a negative charge before the experiment started. the negatively charged rod attracts electrons and causes the metal pieces to move further apart.

The electroscope had a negative charge before the experiment started.  When the negatively charged rod comes near the electroscope more electrons are repelled down to the metal pieces and the metal pieces move farther away from each other.

 Step-by-step explanation: First of all, how we know the answer is not A or B is because unlike charges attract each other which means the metal pieces would not spread out. Now that we narrowed it down to C and D we can find the answer, In answer choice D it states that the negatively charged rod attracted the electrons from the electroscope, if that happened then something would happen to the rod, not the electroscope. In answer choice C it says that the rod repels the electrons downward on to the metal pieces, which would cause the metal pieces to spread out since they are both negative. Sorry, I'm not the best with explaining, I hope you understand.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

the answer is d. (1.2, -4.7) on edgn

hope this !