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Author Question: An object is placed 21 cm from a concave lens of focal length 25 cm. What is the magnification? ... (Read 21 times) |
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Cyanide works by making the human body unable to use oxygen.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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Medication errors are more common among seriously ill patients than with those with minor conditions.