I believe the answer should be the last option. upon interaction, both objects should have the same charge after the electrons are transferred.
Answer:

Explanation:
a) Fundamental frequency
A harmonic is an integral multiple of the fundamental frequency.


b) Wave speed
(i) Calculate the wavelength
In a fundamental vibration, the length of the string is half the wavelength.

(b) Calculate the speed
s



D. physical property
the bonds between molecules of mercury are breaking so it's physical and it's not changing the chemical composition of the substance