less massive stars? Higher temperature‚ higher pressure‚ higher fusion rate means they consume their “fuel” faster. 10. What will gravity do to the sun when fusion is over? Gravity will begin to crush the star. Then the core will heat enough to fuse helium together into carbon. The outer atmosphere will evaporate‚ ejecting gases‚ causing a planetary nebula. 11. What is a white dwarf? The remnant of a main sequence star. When the star runs out of “fuel” it contracts until electrons produce enough pressure
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in nebulae. Huge clouds of dust and gas collapse under gravitational forces‚ forming protostars. These young stars undergo further collapse‚ forming main sequence stars. Stars expand as they grow old. As the core runs out of hydrogen and then helium‚ the core contacts and the outer layers expand‚ cool‚ and become less bright. This is a red giant or a red super giant (depending on the initial mass of the star). It will eventually collapse and explode. Its fate is determined by the original mass
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industries like healthcare organizations to evaluate process failures and improve patient safety. This proactive risk-assessment approach is used in addressing operational challenges such as operating room turn-over‚ emergency room waiting time‚ door-to-balloon time‚ etc. Hence‚ it can be asserted that FMECA procedure is an effective tool in identifying and
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Drop the raisins in. Those tiny bubbles attaching themselves to the raisins are carbon dioxide (CO2) bubbles. The irregular surface of the raisins enables a lot of CO2 to accumulate. When enough gas bubbles attach to the raisins‚ they act like tiny balloons‚ giving the fruit enough lift or buoyancy to rise. The raisins should rise to the top of the glass and float on the surface. As the carbon dioxide escapes into the atmosphere‚ though‚ the raisins will sink. Then the whole process will repeat itself
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Daniel Cho Period 7 4/7/15 Electricity and Magnetism Spring Lab Project Electric Field Hockey Objective: Write two paragraphs. Explain the challenges of scoring goals in this game. Be sure to include in your explanation the terms positive and negative charge‚ electric field line and explain how mass affects the motion of the “puck.” This simulation project is all about getting the puck into the goal while surround the puck with using few positive and electric charges. The positive charges
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ANGIOPLASTY/ BALLOON ANGIOPLASTY Coronary angioplasty is accomplished using a balloon-tipped catheter inserted through an artery in the groin or arm to enlarge a narrowing in a coronary artery. Coronary artery disease occurs when cholesterol plaque builds up (atherosclerosis) in the walls of the arteries to the heart. Angioplasty is successful in opening coronary arteries in 90% of patients. 40% of patients with successful coronary angioplasty will develop recurrent narrowing at the site of balloon inflation
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* Compare the views of Hubble and Friedman about the expansion of the universe: Edwin Hubble’s observation In 1929‚ Edwin Hubble announced that his observations of galaxies outside our own Milky Way showed that they were systematically moving away from us with a speed that was proportional to their distance from us. The more distant the galaxy‚ the faster it was receding from us. The universe was expanding after all‚ just as General Relativity originally predicted! Hubble observed that the light
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Gas Laws Lab Introduction: The four basic physical properties of a gas sample are pressure‚ volume‚ temperature‚ and number of moles. The volume simply indicates the volume of the container since a gas will take up all space available to it. The temperature indicates the average kinetic energy of the gas particles. For gases‚ the temperature must be converted to the Kelvin unit. The pressure of the gas indicates the number of collisions with each other and the wall of the container. The number
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Endoscopic retrograde cholangiopancreatography (ERCP) has become one of the most important techniques for the diagnosis and treatment of choledocholithiasis. Endoscopic balloon dilatation (EBD) and endoscopic sphincterotomy (ES) are the most important endoscopic techniques used for retrieval of common bile duct stones (1) and ES is the most commonly used method as a standard technique. (2) Despite the relative safety of ES the overall complication rate is about 10%. (3) The short-term risk of pancreatitis
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The Cosmic Perspective‚ 7e (Bennett et al.) Chapter 19 Our Galaxy 19.1 Multiple-Choice Questions 1) What is the diameter of the disk of the Milky Way? A) 100 light-years B) 1‚000 light-years C) 10‚000 light-years D) 100‚000 light-years E) 1‚000‚000 light-years Answer: D 2) What is the thickness of the disk of the Milky Way? A) 100 light-years B) 1‚000 light-years C) 10‚000 light-years D) 100‚000 light-years E) 1‚000‚000 light-years Answer: B 3) What kinds of objects lie in the
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