The mechanical energy of an object is equivalent to the sum of its potential and kinetic energy. If the helicopter is grounded, then its mechanical energy will be 20 J. If it is in the air, then its potential energy will be calculated using:P.E = mghAnd then added to the kinetic energy to obtain mechanical energy.
The important result of the Union victory at Vicksburg was that the Union now controlled the Mississippi River. The correct option among all the options given in the question is option "A". This also helped the Union to cut off most of the Western States from the hands of the Confederate army. Also the Union had the control over the food supplies and this made the Confederate army surrender quickly.
Labor unions can affect the economy by possibly providing higher wages for its workers, but it will simultaneously lower the profits made by the company, and create fewer jobs. This is because labor unions encourage the benefit of the workers (as the workers join together to fight for better treatment), but it will discourage other companies/businesses from investing in the company. So although it benefits the workers morally, it can negatively affect the success of businesses in the economy.
The Europeans brought many diseases with them that decimated Native American populations
Israel was claimed by the native Palestinians who had lived there apart from the Jews.
Explanation:
The land of Israel was a very contested part of the world as it was historically accurate as the place where the Jews lived but this also meant that it was the place where there were less Jews now as they had migrated out.
Now the people who occupied the land were the Palestinian Muslims who themselves had been in the region for hundreds of years and were also natives with a legitimate claim to the land
Eventually it was handed over to Israel to much the dismay of the Muslims of the area.
