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Author Question: A traffic light weighing 100 N is supported by two ropes as shown in the figure. The tensions in the ... (Read 228 times) |
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
Vaccines prevent between 2.5 and 4 million deaths every year.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.