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.
Answer:
first one
Explanation:
Surely, Centers for Disease Control in the Dept of Health and Human Services
Some Native American tribes thought by making a partnership with the settlers that they would be able to trade goods with the settlers and bring peace among the colonists and themselves. A short time of peace was brought among them, before fighting broke out.
Answer:
B. The voters have representatives called the Electoral College, who determine the president and vice president.
Explanation:
The Twelfth Amendment to the United States Constitution is the one that organizes the procedure of choosing the president and vice president. It is a sort of addition to the constitution that has previously stated each elector votes for two persons. The one who has the majority is the president, and the follow up would be voted as vice president. Yet, when political parties started functioning separately, there was a problem with tie votes and candidates from the same parties going against each other instead of as a team.
<u>The twelfth amendment fixed this, stating that there should be separate electoral votes for president and vice president, calling them two separate ballots. </u>
<span>4.74 billion years until the sun swallows up the Earth and all the planets. </span>