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.
Answer: Option E
Explanation: In simple words, break even point refers to that level of production and sales at which the total cost incurred and the revenue earned by a firm is equal. In other words, it can be understood as no profit no loss situation.
It is computed by dividing the contribution proportion in the sales from the fixed cost that are to be incurred.
Hence from the above we can conclude that the correct option is E.
Answer:
Islam
Explanation:
Islam began to spread in Africa from the 7th to the 9th century, and it became a strong religious and economic force in North Africa and West Africa. The spread of Islam in North Africa first started under the Umayyad Dynasty. Islam was able to spread throughout North and West Africa as a result of a strong trade network throughout the regions.
The Jenne architecture which is linked to Jenne, a town in the Inland Niger Delta region of central Mali, was were the most notable great mosque was built, it had a distinct and magnificent architecture .
Currently, 93% of the total population of Middle East-North Africa region are practice Islam
