...Madeleine McCann, the British toddler who vanished from her family’s vacation apartment in Portugal in 2007, may be alive, according to detectives conducting a review of the investigation. Scotland Yard made the announcement on Wednesday, noting that officers reviewing the case discovered up to 200 new items for investigation using existing evidence. “We genuinely believe there is a possibility that she is alive,” Detective Chief Inspector Andy Redwood from Scotland Yard’s Homicide and Serious Crime Command told reporters. (MORE: Case Closed for the McCanns?) The review team is now combing through evidence and reports from Portuguese authorities, inquiries held by U.K. law enforcement agencies, and the work of private investigators hired by the McCann family. In a statement released this morning, Scotland Yard said the existing evidence includes around 40,000 pieces of information. “We are working on the basis of two possibilities here,” Redwood said. “One is that Madeleine is still alive; and the second that she is sadly dead.” Hoping that she is alive and well, police have issued an age progression image of Madeleine, who would be nine years old. Madeleine was three when she disappeared in the resort town of Praia da Luz, and her cause became one of Britain’s most famous missing persons cases. Celebrities like David Beckham appealed to the public for information regarding Madeleine’s whereabouts. Her parents, Kate and Gerry McCann, secured an audience with the Pope and...
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...Friday, December 13 4:23 PM eschulte account log off PHYS 101 Exams UIUC Instructor Unit 3: Homework / Homework / Homework / Schulte, Elaine Student Homework: Hour Exam 3 Deadline: 100% until Thursday, November 21 at 8:00 AM Problems Print Assignment View Standard Exercise The Mass and The Spring 1 2 3 The Mass and The Spring Standard Exercise The Pendulum Standard Exercise The Hydraulic Lift Standard Exercise Archimedes and the King's Crown Standard Exercise The Garden Hose Standard Exercise The Guitar String A block of mass m = 5 kg is connected to a vertical spring as shown in the diagram. When the mass is at rest, the spring stretches y0 = 5 cm beyond its natural length lspring = 14 cm. Standard Exercise The Intense Speakers 1) For this system, in the vertical configuration, y0 = 5 cm gives the equilibrium position. False True Submit Hide Solution Standard Exercise The Speeding Car Standard Exercise Heating a Metal Strip Solution: This question asks about the effect of gravity on the equilibrium position of a spring. Remember that the effect of a gravitational force is to stretch the spring an amount Δx = mg/k. This stretch in the spring represents an offset in the natural (horizontal) equilibrium position of the spring. While the question is strangely worded, the answer is true, the change in position y0 = 5 cm represents the new equilibrium position. Standard Exercise Compressing...
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...Richard Ching Biology 141 Exam 1 Study Questions 1-15 1. What is the difference between an hypothesis and a scientific Theory? Between an hypothesis and a prediction? What kinds of hypotheses are useful for scientific investigations that try to explain the natural world, and which are not? Give one or more examples of hypotheses that are and are not scientifically useful. A scientific theory is an explanation for a broad class of phenomena or observations, whereas a hypothesis is a testable statement to explain the workings of a particular scientific theory. In other words, a hypothesis aims to find out how a phenomena occurs. What distinguishes a hypothesis from a prediction is that a prediction is simply a part of a hypothesis, and is an observable or measureable result that must hold true if the hypothesis is correct. A hypothesis is useful to a scientific investigation in the case that it can be tested and have results gathered from experimentation or observation, while hypotheses that cannot be tested and concluded upon are not useful. An example of a useful hypothesis is the question of whether or not cramming increases test performance when compared to consistent studying, and an example of a hypothesis that is not scientifically useful would be the question of whether God truly exists. 2. Two of the greatest unifying ideas in biology (i.e., concepts that account for and are consistent with a very large number of observations) are the Cell Theory, and the Theory...
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