Determine the pressure exerted on a diver at 20 m below the free surface of the sea. Assume a barometric pressure of 101 kPa and a specific gravity of 1.03 for seawater.

The absolute pressure in water at a depth of 8 m is read to be 175 kPa. Determine (a) the local atmospheric pressure, and (b) the absolute pressure at a depth of 8 m in a liquid whose specific gravity is 0.78 at the same location.

Determine the pressure exerted on a diver at 45 m below the free surface of the sea. Assume a barometric pres­sure of 101 kPa and a specific gravity of 1.03 for seawater.

A vacuum gage connected to a chamber reads 36 kPa at a location where the atmospheric pressure is 92 kPa. Determine the absolute pressure in the chamber.

What is the difference between the pressure of the blood in your brain when you stand on your head and the pressure when you stand on your feet?

Atmospheric pressure Under certain conditions, the atmospheric pressure $p$ at altitude $h$ is given by the formula $p=29 e^{-0.000034 h}$. Express $h$ as a function of $p$.

How high can you suck water up a straw? The pressure in the lungs can be reduced to about 10 kPa below atmospheric pressure.

A gas has an initial volume of $39$ ml at an unknown pressure. If the same sample occupies $514$ml at $720$ torr, what was the initial pressure?

Saturated water vapor at 200 F has its pressure decreased to increase the volume by 10%, keeping the temperature constant. To what pressure should it be expanded?

Blood pressure is usually measured by wrapping a closed air-filled jacket equipped with a pressure gage around the upper arm of a person at the level of the heart. Using a mercury manometer and a stethoscope, the systolic pressure (the maximum pressure when the heart is pumping) and the diastolic pressure (the minimum pressure when the heart is resting) are measured in $\mathrm{mm} \mathrm{Hg}$. The systolic and diastolic pressures of a healthy person are about $120 \mathrm{~mm} \mathrm{Hg}$ and $80$ $\mathrm{mm} \mathrm{Hg}$, respectively, and are indicated as $120/80$. Express both of these gage pressures in $\mathrm{kPa}, \mathrm{psi}$, and meter water column.

Suppose a person can reduce the pressure in the lungs to $- 80$ mm-Hg gauge pressure. How high can water then be sucked up a straw?

Consider the scalar field (pressure field) given by $f(x, y)=9 x^2+4 y^2$. Find the isobars (curves of constant pressure). Sketch some of them.

Choose the letter of the best answer. How are air masses classified? A by temperature and pressure B by pressure and humidity C by temperature and density D by temperature and humidity

A gaseous mixture of O$_2$ and N$_2$ contains 34.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 565 mmHg?