Question

The column of a mercury barometer is calibrated in linear units (such as inches or millimeters) and thus the air pressure observed on such a barometer is reported in terms of these linear units. This measurement of pressure can be converted to other common pressure units. Some conversion factors are shown here. 1 mmHg1 atm1 atm1 Pa1 in1 cm======1 torr760 mmHg1.01325 bar10−5 bar2.54 cm10 mm Part A The barometer shown here (Figure 1) measures atmospheric pressure in millimeters of mercury ( mmHg ). According to this barometer, what is the atmospheric pressure P in inches of mercury ( inHg )

Answer 1

To convert atmospheric pressure in millimeters of mercury (mmHg) to inches of mercury (inHg), we can use the conversion factor of 1 in = 25.4 mm. Divide the atmospheric pressure in mmHg by 25.4 to get the pressure in inHg.

Step-by-step explanation:

To convert atmospheric pressure in millimeters of mercury (mmHg) to inches of mercury (inHg), we can use the conversion factor of 1 in = 25.4 mm. Since we are given the atmospheric pressure in mmHg and we want to convert it to inHg, we need to divide the pressure in mmHg by 25.4. So the atmospheric pressure in inches of mercury (inHg) is P = mmHg / 25.4.

Let's substitute the given pressure in mmHg into the equation. If the atmospheric pressure in mmHg is, for example, 760 mmHg, we divide 760 by 25.4 to get the atmospheric pressure in inHg: P = 760 mmHg / 25.4 = 29.92 inHg. The atmospheric pressure in inches of mercury is approximately 29.92 inHg.