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:
The early goal of Portugal during the Age of Exploration was to look for a naval route going to India. The land routes were blocked by the Ottoman Empire which hindered the trade in the Far East. India was then considered the Portuguese state and it was founded six years after the Portuguese explorers found the route to India.
A horse. My ancestors were farmers, thus a horse would be the most useful to me. It can help you care for your crops, and allow you to travel to town to purchase and sell products.
I believe the answer is inflation.
Inflation- rising prices due to an increase in the supply of money
