If atmospheric pressure is 30.40 inches of mercury, what is the air pressure in millibars?
(1)1016 mb (2)1028.3 mb
(3)1029 mb (4)1029.5 mb
I think that the answer is either 2 or 4, could you check my answer?
To convert inches of mercury (inHg) to millibars (mb), you can use the following conversion factor: 1 inHg = 33.8639 mb.
Now, let's calculate the air pressure in millibars using the given atmospheric pressure of 30.40 inches of mercury:
30.40 inHg * 33.8639 mb/inHg = 1029.53696 mb
Rounding this result to the nearest tenth, we get 1029.5 mb.
Therefore, the answer is option (4) 1029.5 mb. Well done!