Question:
Energy often changes from one form to another. For example, the drummer transfers motion to sound energy. When the moving drumstick strikes the drum head, the drum starts to vibrate. The motion of the vibrating drum head creates the sound you hear. Any form of energy can change into any other form. Frequently, one form of energy changes into two or more different forms. Have you ever sat in front of a campfire? What are two things you notice? The fire creates light. It is also warm by the fire, meaning it creates heat. The energy of the fire comes from the stored energy in the wood. The wood contains chemical energy. As it burns, the chemical energy is changed into light and heat. Not all chemical energy changes produce light and heat. Our cars use gasoline as a fuel. Gasoline contains chemical energy. When our cars burn gasoline in their engines, it is converted into motion and heat. When energy changes forms, energy is conserved. After reading the above, is "Light and heat" the correct answer to the question "Wood is transformed into which type of energy?"?

Answer:
yes

Question:
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." After reading the above, is "She came in with sushi, sashimi, oysters in their shells, and Terran vegetables" the correct answer to the question "What makes the older speaker wonder about the female speaker's extravagance?"?

Answer:
yes

Question:
What if two children push a swing at the same time? Would the swing go higher? Yes, together their force would be more. It is common for forces to be combined. Most objects on Earth have at least two forces acting on them. Do you know what one of them is? Of course, that force is gravity. How many forces do you have on you right now? Gravity pulls you down toward the center of Earth. Your legs exert a downward force. They hold you up against the pull of gravity. Consider the example in Figure 1.3. A book is resting on a table. Gravity pulls the book downward. It has a force of 20 newtons. At the same time, the table pushes the book upward. Its force is also 20 newtons. The table opposes the pull of gravity. After reading the above, is "Gravity, downward force" the correct answer to the question "How many forces do you have on you right now?"?

Answer:
yes

Question:
In Colombia, the drug-financed guerrillas trying to seize the country and destroy democracy include M-19, which Castro has clearly backed. Robert Merkel, a former U.S. attorney handling drug indictments in Florida, doesn't think for a minute that Castro's much publicized trials of high officials engaged in the drug trade mean he has broken off with the Medellin drug cartel. "If the cartel succeeds in blackmailing the Colombian authorities into negotiations, the cartel will be in control and Fidel can exploit his past relationships with them," he told the Journal's David Asman recently. The struggle against the drug lords in Colombia will be a near thing. This week, the government arrested Jose Abello Silva, said to be the fourth-ranking cartel leader. He will probably be extradited to the U.S. for trial under an extradition treaty President Virgilia Barco has revived. Later, another high-ranking trafficker, Leonidas Vargas, was arrested and 1,000 pounds of dynamite seized. Mr. Barco has refused U.S. troops or advisers but has accepted U.S. military aid. President Bush has agreed to meet within 90 days with Mr. Barco, President Alan Garcia of Peru and President Jaime Paz Zamora of Bolivia to discuss the drug problem. It might not be a bad idea to do that sooner, rather than later. After the Panama fiasco, they will need some reassurance. Certainly, the Colombian press is much in need of that. After reading the above, is "The fourth-ranking cartel leader" the correct answer to the question "Who is probably going to be extradited to the U.S. for trial under President Barco's revised extradition treaty?"?

Answer:
yes