So what is gravity? A typical definition of gravity is that it is a force. It causes an attraction between two masses. According to this definition, anything that has mass exerts a force. Any object exerts gravity on other objects. It does not matter how small it is, it has gravity. The more matter an object has, the more gravity it has. Your pencil has a tiny bit of gravity, but far too little to notice. What about a planet? It would have a lot of gravity. An objects gravity exerts a pull on other objects. Friction only occurs between objects that are touching. Gravity can act between objects that are not touching. In fact, gravity can act over very long distances. Where else can you feel gravity?

Do all objects exert gravity?

The Finnish government and major creditors of bankrupt shipyard Waertsilae Marine Industries Oy agreed in principle to form a new company to complete most of the troubled shipyard's backlog of 15 ships. The new company will attempt to limit the shipyard's losses, participants said. "The situation is that the bankruptcy court will get out of the shipbuilding business. Everything will be taken over by the new company," said Christian Andersson, executive vice president of Oy Waertsilae, former parent of Waertsilae Marine. Once its ownership is finalized, the new company will open talks with state-appointed receivers to buy or lease Waertsilae Marine's shipyard facilities. Subcontractors will be offered a settlement and a swift transition to new management is expected to avert an exodus of skilled workers from Waertsilae Marine's two big shipyards, government officials said. Under an accord signed yesterday, the government and Union Bank of Finland would become major shareholders in the new company, each injecting 100 million Finnish markkaa ($23.5 million). Oy Waertsilae is to contribute 200 million markkaa, most of it as subordinated debt, and take a minority stake in the new company. Customers holding contracts for Waertsilae Marine's undelivered ships are expected to subscribe most of the remaining 170 million markkaa in share capital, government officials said. Waertsilae Marine's biggest creditor is Miami-based Carnival Cruise Lines Inc. Carnival, which has three ships on order from Waertsilae Marine, presented claims for $1.5 billion damages in the bankruptcy court this week. Waertsilae Marine's bankruptcy proceedings began Tuesday in a Helsinki court.

Will the Finnish government own the new company?

Tokugawa Takes All: When Hideyoshi died in 1598, he hoped to have his five-year-old son continue his "dynasty," initially under the tutelage of five regents. But one of the regents was Ieyasu Tokugawa, who had been biding his time at Edo for 12 years, nurturing dynastic ambitions of his own. Of the cunning, ruthless triumvirate that came out on top at the end of the country's century of civil war, Tokugawa was without doubt the most patient, the most prudentand most treacherous. He moved quickly to eliminate his strongest rivals, crushing them in 1600 at the great Battle of Sekigahara (near modern Nagoya). During its subsequent two and a half centuries of rule from the new capital established at Edo, the Tokugawa organized a tightly controlled coalition of some 260 daimyo in strategic strongholds throughout the country. The allegiance of this highly privileged and prestigious group was ensured by cementing their ethical principles in the code of bushido, "The way of the warrior": loyalty to one's master, defense of one's status and honor, and fulfillment of all obligations. Loyalty was further enforced by holding the vassals' wives and children hostage in Edo. All roads into Edo, the most famous being the Tokaido Highway, had checkpoints for guns coming in and for wives going out. One of the most effective ways of keeping a tight rein on the country was to cut it off from the outside world, to keep Japan Japanese. At first, Ieyasu Tokugawa was eager to promote foreign trade. He wanted silk and encouraged the Dutch and British as good, nonproselytizing Protestants just interested in trade. But he didn't like the Portuguese and Spanish Catholic missionaries, who he felt were undermining traditional Japanese values. He banned their activities in 1612 and two years later ordered the expulsion of all missionaries and unrepentant Japanese converts. Executions and torture followed. Converts were forced to renounce their faith by trampling crucifixes and effigies of Jesus and Mary. The Catholic Church has counted 3,125 martyrs in Japan from 1597 (beginning under Hideyoshi) to 1660. In 1635 the Japanese were forbidden, on pain of death, to attempt to travel abroad, and Japanese citizens already overseas were prevented from returning, in case they brought back subversive Christian doctrines. Western books were banned, as were Chinese books that mentioned Christianity.
Give an important date in Japanese history that marks the "closing of Japan" to the outside world and give three examples of this isolation policy.