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Define a machine
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Asked 5/8/2012 1:45:32 PM
Updated 2/8/2015 2:14:54 PM
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Flagged by yumdrea [2/8/2015 2:14:54 PM]
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User: Define a machine

Question
Asked 5/8/2012 1:45:32 PM
Updated 2/8/2015 2:14:54 PM
1 Answer/Comment
Flagged by yumdrea [2/8/2015 2:14:54 PM]
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Machine is a device consisting of fixed and moving parts that modifies mechanical energy and transmits it in a more useful form.

Added 2/8/2015 2:14:47 PM
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Explain why x-rays can be used to produce photographs of fracturers in bones
Weegy: An X-ray is a test that uses radiation to produce an image of the inside of the body. X-rays are a form of radiation. Unlike light radiation (normal light), which is absorbed or reflected by your skin, X-ray radiation passes through your body. [ [ An X-ray machine works by projecting a beam of X-rays through the part of your body that your doctor needs to look at. An X-ray sensitive detector then captures the radiation that comes out on the other side of your body in the form of a black and white image. This is called a radiograph. Structures inside your body that are dense, such as your bones, absorb X-rays and show up white on the radiograph. Less dense structures, like the air in your lungs, let X-rays pass through them almost completely and show up black on the radiograph. Because different parts of your body vary in how dense they are, and absorb X-rays by different amounts, they show up on the radiograph as shades of grey, from the most dense (black) to the least dense (white). ] ] (More)
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Asked 5/8/2012 1:27:38 PM
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