If the temperature is constant, then the atmospheric pressure P (in pounds/square inch) varies with the altitude above sea level h in accordance with the law 
, where p?0 is the atmospheric pressure at sea level and k is a constant.
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If the atmospheric pressure is 17 lb/in.2 at sea level and 12.5 lb/in.2 at 6,000 ft, find the atmospheric pressure at an altitude of 18,000 ft. Please round the answer to one decimal place.
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__________ lb/in.2
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How fast is the atmospheric pressure changing with respect to altitude at an altitude of 18,000 ft? Please round the answer to four decimal places.
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__________lb/in.2/ft
What will be an ideal response?
6.8; 0.0003
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A. ? B. 1 C. 0 D. -?
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