A sealed cylinder contains a sample of ideal gas at a pressure of $2.0 \mathrm{~atm}$. The rms speed of the molecules is $v_0$. If the rms speed is then reduced to $0.90 v_0$, what is the pressure of the gas?

Where is the lowest and highest pressure in the vascular system found?

Refer to the graph in the earlier figures to answer the following:

a. Approximately how much does the air pressure drop (in millibars) between the surface and 4 kilometers? (Use a surface pressure of 1000 millibars.)

b. How much does the pressure drop between 4 and 8 kilometers?

c. Based on your answers to parts a and b, answer the following: With an increase in altitude, air pressure decreases at a(n) (constant, increasing, decreasing) rate. Underline the correct answer.

At what depth beneath the surface of the lake is the pressure in the water equal to twice atmospheric pressure? a. $~$ $10 \mathrm{~m}$ b. $~$ $100 \mathrm{~m}$ c. $~$ $1000 \mathrm{~m}$ d. $~$ $10,000 \mathrm{~m}$

Which of the following statements is not correct?

a. Over 70 million Americans are sleep deprived.

b. Young adults (under age 24 ) are the most sleep-deprived population in America.

c. Over 45 percent of the world's population suffer from some form of sleep deprivation.

d. The highest risk for drowsydriving accidents is among males aged 17 to 23 .

Which brain components determine intracranial pressure, and under what conditions might each contribute to elevated intracranial pressure?

A fan is observed to operate with a pressure difference of 4 in. of water. What is the pressure difference in SI units and terminology?

The pressure 45.0 meters under water is 543 kPa. What is this pressure in atm?

A pressure cooker contains 5.68 liters of air at a temperature of 394K. If the absolute pressure of the air in the pressure cooker is 205 Pascals, how many moles of air are there in the cooker?

Compare the various methods of hemodynamic monitoring (e.g., central venous pressure, pulmonary artery pressure, and arterial pressure monitoring) with regard to indications for use, potential complications, and nursing responsibilities.

Which of the following is true about early- and late-maturing adolescents?

a. Early-maturing boys are more likely to be agitated and ill-natured.

b. Early-maturing boys are often dominated by late-maturing boys.

c. Early-maturing girls become conspicuous with their height and development of their breasts.

d. Early-maturing girls are at less risk for psychological problems and substance abuse.

Choose the appropriate phrase from the given below for the term "caliper" .

a. best measure of body composition

b. used to measure skinfolds

c. condition associated with health risk factors

d. energy your body uses just to keep you living

e. eating disorder most common among performers

Which of the following is true about CVD?

a. It's only a problem in developed nations.

b. It claims the lives of more men than women every year.

c. Risk factors are only an issue starting at age 50 .

d. It's the leading cause of death in America.

Who is at the highest risk for developing skin cancer?

a. People who sunburned often and badly during childhood

b. People who have dark skin

c. People without a base tan

d. People who wear sunscreen daily but tan easily