Answer:A pendulum illustrates the conservation of energy. The pendulum has the most potential energy - the energy of position or stored energy - when it is highest above the ground. It has the most kinetic energy - the energy of motion - when it is moving the fastest. As the pendulum swings downward, the potential energy changes to kinetic energy. As it swings upward, the kinetic energy changes to potential energy. The back-and-forth swinging of a pendulum is simple harmonic motion - motion that repeats periodically. The period of a pendulum is the time needed for one complete swing back and forth. This period is constant; it changes only if the length of the pendulum is changed. Ask student to time the periods of their pendulums when the pendulums swing through a longer distance (larger arc) or shorter distance (smaller arc). They will discover that the periods are the same. Have the students then change the mass by adding one or more washer to their pendulum. When the students time the periods, they discover that the period does not change if the mass is changed. Ask students to experiment to find what will change the period of the pendulum. Students will discover that the period will change if the pendulum’s length is changed.
Explanation:
When Japan fell during the Second World War, Korea was suddenly free, and hoped to finally be able to decide the fate of their own country. Most Koreans campaigned for a unified state.
However, the United States and the Soviet Union had different ideas. The Soviets wanted to expand the sphere of communist influence into Korea. The United States countered by encouraging the establishment of democracy. Additionally, the United States stressed the importance of containment, which is a foreign policy used to prevent the spread of communism.
This disagreement would eventually lead to the Korean War. The Korean War was the first battle of the Cold War, and first major proxy war fought between the United States and a Soviet communist supported enemy. A proxy war occurs when one or more opposing powers instigates a war and then uses third parties to fight on their behalf.
Dear Lewis,
I want to say thank you for everything you have done, I appreciate that you have helped me and i hope you the best in life!
Thanks, and best wishes.
-Your dear friend
He thought slavery would be decided by the civil war
