If you have a mass of 50 kg on Earth, what is your weight in newtons? An object with more mass is pulled by gravity with greater force. Mass and weight are closely related. However, the weight of an object can change if the force of gravity changes. On Earth, the force of gravity is the same everywhere. So how does the force of gravity change? It doesnt if you stay on Earth. What if we travel to another planet or moon in our solar system? Look at the photo of astronaut Edwin E. Aldrin Jr. taken by fellow astronaut Neil Armstrong in the Figure. They were the first humans to walk on the moon. An astronaut weighs less on the moon than he would on Earth. This is because the moons gravity is weaker than Earths. The astronauts mass, on the other hand, did not change. He still contained the same amount of matter on the moon as he did on Earth. If the astronaut weighed 175 pounds on Earth, he would have weighed only 29 pounds on the moon. If his mass on Earth was 80 kg, what would his mass have been on the moon? [Figure 3]

Question: "How does gravity change?"

Answer: "It changes with weight"

Response: no

After becoming disabled in a machete attack on a visit to his native Haiti, Jean-Claude Joseph needed help persuading his landlord to move him from a fifth-floor apartment to one on the ground floor. Isaac Benjamin became ensnared in a bureaucratic snafu that took away his Social Security disability payments for more than two years. The story of Martha, a woman from Sierra Leone, was more compelling. Beaten, raped and tortured in her politically repressive homeland, she knowingly used someone else's passport to escape to America, but was caught by immigration authorities upon her arrival. She desperately sought political asylum. Not the kind of cases that lead to ground-breaking upheavals in the law, but the kind of cases that are handled day in and day out by lawyers for the legally disenfranchised who have no where else to turn. The work of attorneys from Legal Services of New Jersey will be highlighted in a onehour documentary, "Quest for Justice," to be aired 9 p.m. today on New Jersey Network. Produced by NYD2, a communications firm based in Somerset, the documentary features case histories of clients whose needs ranged from housing to fighting off deportation. Joseph, a 54-year-old naturalized citizen, turned to Legal Services when the landlord of his federally subsidized apartment complex in Elizabeth turned a deaf ear to his request for a ground-floor apartment. Having lost the use of his left arm in warding off the machete attack during a robbery attempt, Joseph said he found it increasingly difficult to negotiate the five flights of stairs lugging groceries or laundry on the frequent occasions when the building's elevator was out of order. "With this, it became impossible for me to stay upstairs," he said, pointing to the scars on his forearm. "If I cannot carry my groceries or my laundry, how can I live?" "It was a compelling case," said Legal Services attorney Stephen St. Hilaire. "The key for us -- and we have to make tough decisions all the time on whether to take a case -- was visualizing what he had to do to get to the fifth floor, struggling with a bag of groceries," he said. Benjamin, 53, of Jersey City had been collecting Social Security disability after undergoing double bypass surgery when the checks stopped coming. He said the agency claimed he had failed to return a form updating the condition of his health. "But what got me was they didn't let me know they didn't get it, they just cut me off," he said, adding he found it impossible to negotiate the Social Security bureaucracy himself.

Question: "Who helped native Haiti Jean-Claude Joseph when his landlord would not accommodate his disability?"

Answer: "No one"

Response: no

Taliban and American aid. After the September 11 attacks, it was necessary for conservatives to somehow explain away the fact that the US government gave 245 million dollars to the new evildoers du jour. Never mind the fact that authors such as Robert Scheer warned of aiding the Taliban as early as in May 2001. Never mind that they did so not out of some humanitarian motivation, but because of the Taliban's violent enforcement of the ban on opium poppies. Never mind that in a regime that is controlled by warlords, it does not matter who is authorized to distribute the aid -- the ruling regional warlords will seize control of it and use it to their own advantage. Never mind that this very argument has been used by hawks in opposition to sending humanitarian aid to Iraq's Saddam Hussein. Never mind that the Taliban continued selling opium in spite of the deal. Never mind that this is all documented on Michael Moore's website about the film. Gun homicides. Statistics are Moore's weakest point, and it is surprising that his critics don't dwell on them longer. That's because they know all too well that Moore is correct: The United States have a far greater homicide rate (both gun- and non-gun) than most other first world countries. His main mistake is that he does not use population corrected data, his second mistake is that he does not cite his sources (and, as you correctly point out, he probably uses different reporting methods for the different countries). A good comparison of international homicide rates can be found on the relatively neutral guncite.com website.

Question: "What author warned aiding of the Taliban?"

Answer: "Michael Moore"

Response: no

(CNN) -- English club Chelsea have completed the signing of Oriol Romeu from Spanish and European champions Barcelona. The 19-year-old is currently playing for Spain at the World Under-20 Championships in Colombia and has signed a four-year deal with last season's Premier League runners-up. The deal is worth $7 million and includes a buy back clause, set at $14 million after the first year and $21 million after the second. Romeu started his career at Barcelona's city rivals Espanyol before joining the Camp Nou academy in 2004. The midfielder, who can also play in central defence, made his debut for Barcelona in last season's Spanish Supercup match with Seville and got his first taste of league action against Deportivo in May 2010. He has played 90 minutes in both of Spain's games at the World Under-20 Championships, when they beat Costa Rica and Ecuador. Chelsea official web site confirmed the signing and said Romeu is "renowned for his strength and his expansive passing ability." Another player leaving Barcelona is Jeffren Suarez after he agreed to join Sporting Lisbon. The Portuguese outfit have paid $5 million for the 23-year-old which, like the Romeu deal, includes a buy back option. Jeffren joined Barca from Tenerife in 2004 and made his debut for the Catalan club in the 2006-07 season.

Question: "What position did Romeu play when he started his career at Barcelona's city rivals Espanyol?"

Answer: "Midfielder"

Response:
yes