Calculate the absolute pressure if a barometer is - 40 mmHg of gauge pressure.
To calculate the absolute pressure, we need to add the atmospheric pressure to the gauge pressure.
Given that the gauge pressure is -40 mmHg, we can assume that the atmospheric pressure is 760 mmHg (standard atmospheric pressure at sea level).
So, the absolute pressure would be:
Absolute Pressure = Gauge Pressure + Atmospheric Pressure
= -40 mmHg + 760 mmHg
= 720 mmHg.
Therefore, the absolute pressure is 720 mmHg.
To calculate the absolute pressure, we need to add the atmospheric pressure to the gauge pressure.
Given:
Gauge pressure = - 40 mmHg
Atmospheric pressure can vary, but typically it is around 760 mmHg at sea level.
Now, let's calculate the absolute pressure:
Absolute pressure = Atmospheric pressure + Gauge pressure
Absolute pressure = 760 mmHg + (- 40 mmHg)
Absolute pressure = 720 mmHg
Therefore, the absolute pressure is 720 mmHg.