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? 

Question: "How do objects interact under gravity?"

Answer: "Any object exerts gravity on other objects no matter how small it is, and the more matter an object has, the more gravity it has."

Response: yes


The next evening, she arrived with a stack of glistening stopboxes containing sushi, sashimi, oysters in their shells, and Terran vegetables fresh plucked from their hydroponic beds. Wondering about the reason for her extravagance, I asked how work had gone that day. "Emil came in. He's taking Dream's End." "Emil?" "You've no memory left, old one. Emil Malaquez." You did that to test my affections." "What?" "Calling him by his first name. I did that in a comedy once.'Nights with Karl and Groucho.' It was before your time." "The critics liked it." "I'm glad." A moment later: "That's not why I called him 'Emil'." "No. We lunched together. He's nice." 

Question: "What did the critics like?"

Answer: "Comedy"

Response: yes


`` The Octopus , '' a masked crime lord , is bent on crippling the nation with a wave of terror . He starts with the transportation system and then moves onto industry . He demands tribute from railroad magnates and other captains of industry . Richard Wentworth , an amateur criminologist who is friendly with the police , is secretly `` The Spider , '' a masked vigilante equally determined to wipe the Octopus and his gang off the face of the earth . Pleasant and smiling in civilian life , Wentworth is often ruthless as the Spider , slinging two guns against the public enemies who attack him . Wentworth also masquerades as affable underworld lowlife Blinky McQuade . Disguised as McQuade , Wentworth can infiltrate gangland at the hired-gun level and keep current on the gang's plans . The only people who know Wentworth's other identities are his assistants Jackson and Ram Singh , his butler Jenkins , and his fianc e Nita . The Octopus was a villain in a single issue pulp believed to have been written by Norvell Page who wrote most of The Spider pulp stories . He is garbed completely in white and is only ever seen sitting in a chair . Unlike the pulps , The Spider is garbed in a lightweight full length costume with web-like markings on it Which resemble Spiderman's costume . The serial follows the standard formula of fights , shoot-outs , Wentworth's friends being kidnapped at various times and having to be rescued . Each chapter ends with The Spider or his friends in deep trouble , often about to be killed , but the effect is spoiled by a trailer for the next episode Which shows them in full health and fighting the villains . 

Question: "Who demands tribute from magnates and captains of industry?"

Answer: "Blinky McQuade"

Response: no


We do not know exactly how the hijackers gained access to the cockpit; FAA rules required that the doors remain closed and locked during flight. Ong speculated that they had "jammed their way" in. Perhaps the terrorists stabbed the flight attendants to get a cockpit key, to force one of them to open the cockpit door, or to lure the captain or first officer out of the cockpit. Or the flight attendants may just have been in their way. At the same time or shortly thereafter, Atta-the only terrorist on board trained to fly a jet-would have moved to the cockpit from his business-class seat, possibly accompanied by Omari. As this was happening, passenger Daniel Lewin, who was seated in the row just behind Atta and Omari, was stabbed by one of the hijackers-probably Satam al Suqami, who was seated directly behind Lewin. Lewin had served four years as an officer in the Israeli military. He may have made an attempt to stop the hijackers in front of him, not realizing that another was sitting behind him. The hijackers quickly gained control and sprayed Mace, pepper spray, or some other irritant in the first-class cabin, in order to force the passengers and flight attendants toward the rear of the plane. They claimed they had a bomb. About five minutes after the hijacking began, Betty Ong contacted the American Airlines Southeastern Reservations Office in Cary, North Carolina, via an AT&T airphone to report an emergency aboard the flight. This was the first of several occasions on 9/11 when flight attendants took action outside the scope of their training, which emphasized that in a hijacking, they were to communicate with the cockpit crew. The emergency call lasted approximately 25 minutes, as Ong calmly and professionally relayed information about events taking place aboard the airplane to authorities on the ground. At 8:19, Ong reported:"The cockpit is not answering, somebody's stabbed in business class-and I think there's Mace-that we can't breathe-I don't know, I think we're getting hijacked." She then told of the stabbings of the two flight attendants. At 8:21, one of the American employees receiving Ong's call in North Carolina, Nydia Gonzalez, alerted the American Airlines operations center in Fort Worth, Texas, reaching Craig Marquis, the manager on duty. Marquis soon realized this was an emergency and instructed the airline's dispatcher responsible for the flight to contact the cockpit. At 8:23, the dispatcher tried unsuccessfully to contact the aircraft. 

Question: "Why would the hijackers have to jam their way in?"

Answer: "The FAA required that the doors to the cockpit be closed and locked during flight"

Response:
yes