Il A heavy ball with a weicht of 100 N (m 10.2 kg) is hung. from the ceiling of a lecture hall on a 4.5-m-long rope. The ball. is pulled to one side and released to swing as a pendulum, reach-. ing a speed of 5.5 m/s as it passes throuoh the lowest point.
Inventions. The huochong gun was invented in China during the Ming dynasty. It was also called the tongjiangjun, which meant bronze general. This was an important invention of the time period because the Ming Dynasty was creating weapons to defend their dynasty, and they came across the gun.t was also called the tongjiangjun, which meant bronze general. This was an important invention of the time period because the Ming Dynasty was creating weapons to defend their dynasty, and they came across the gun.
700 AD Chinese Invent Gunpowder-The Chinese combined saltpeter, sulpher, and carbon to create gun powder. The Chinese used gun powder primarily for fireworks.700 AD Srivijaya Empire (Indonesia) -The Srivijaya Empire becomes the leading power in Indonesia.The Srivijayas originated in southern Sumatra.05 AD Wu Hou Empress Of China-Wu Hou became Empress of China in 705. She was the first woman to rule China and during her reign strengthened the T'ang Dynasty. 707 AD Muslim Army Conquers Tangiers-Tangiers was captured by Muslim armies under the command of Musa ibn-Nusayr in 707.