Question

During a storm, the atmospheric pressure in acertain location fell at a constant rate of3.4 millibars (mb) per hour over a 24-hour timeperiod. Which of the following is closest to the totaldrop in atmospheric pressure, in millimeters ofmercury (mm Hg), over the course of 5 hoursduring the 24-hour time period?(Note: 1,013 mb = 760 mm Hg)A) 2.6B) 12.8C) 17.0D) 22.7

Answer 1

Answer:

Oprion B is correct

12.8 mmHg

Explanations:

Fall in the atmospheric pressure (in mb) in 1 hour= 3.4 mb

1013 mb = 760 mmHg

1 mb = 760 /1013 mmHg

1 mb = 0.75025 mmHg

Fall in the atmospheric pressure (in mmHg) in 1 hour = 3.4 x 0.75025

Fall in the atmospheric pressure (in mmHg) in 1 hour = 2.55085 mmHg

Drop in atmospheric pressure, in millimeters of mercury (mm Hg), over the course of 5 hours = 2.55085 x 5

Drop in atmospheric pressure, in millimeters of mercury (mm Hg), over the course of 5 hours = 12.75 mmHg

Drop in atmospheric pressure, in millimeters of mercury (mm Hg), over the course of 5 hours =12.8 mmHg (rounded to 1 decimal place)