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Professor Foghorn constructed a a super-sensitive gage for his Arctic Laboratory. It is supposed to be measure in the range of 1 mega-Pascals and to be accurate to 1 Pascal.
Foghorn set up the apparatus as shown and asked you what his gage should read. Neglect the density of the ambient air and the air in the tank.
What reading is expected?
♦ Beginning at the air/mercury surface in the glass tube, we have:
| (1) |
Foghorn roared, "Impossible, M'Boy, I put the number to be 799,472 Pascals!
Calculate the reading again but this time include the effects of the air.
Professor Foghorn constructed a a super-sensitive gage for his Arctic Laboratory. It is supposed to be measure in the range of 1 mega Pascals and to be accurate to 1 Pascal. Foghorn set up the apparatus as shown and asked you what his gage should read. Neglect the density of the ambient air and the air in the tank.
What reading of the gage is expected?