Answer:
b) electrons jump onto or off the neutral ball when a charged object comes close
Explanation:
What causes a pithball to move is when "electrons jump onto or off the neutral ball when a charged object comes close".
The pithball electroscope is actually used to test if a body is charged or not. When a charged body is brought near the pithball, the ball moves. The movement of that charged body reveal that there are electrons it is carrying.
The pithball can actually be charged. It is charged by touching a charged object to it. This leads to some of the charges on the surface of the charged object moving to the surface of the ball. The pith-ball electroscope was invented by John Canton, a British schoolmaster and physicist in 1754.
The Indus Valley contributed to the large population of India. It is just northwest of the Indian subcontinent.
The term is used to describe a child's inability to see the world through anyone else's eyes except his or her own is egocentrism.
The nice or nation of being selfish: immoderate hobby in oneself and subject for one's own welfare or advantage on the rate of or in push aside of others Human dignity has all over again been compelled to the margins as corporate greed and egocentrism are given homage.
Egocentrism refers to the child's inability to see a state of affairs from every other character's factor of view. The egocentric child assumes that different people see, listen, and experience precisely the same as the kid does.
if an infant desires very a great deal for something to occur, and it does, the kid believes he or she brought on it to take place. in case your daughter is mad at her brother and wants him to depart, and he then gets sick and is going to the medical institution, your daughter may think her brother's contamination is her fault.
Learn more about Egocentrism here:- brainly.com/question/13044620
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Answer:
The development of antibiotics and immunizations.
Explanation:
