Notes

Question 1

Aluminum v steel tanks

Answer 1

When aluminum is half empty it goes from neg to pos, steel will always be neg, so aluminum needs more weight

Question 2

Charles law

Answer 2

Gases expand when heated; law of volume, every degree F goes up. 5 psi

Question 3

Dalton’s law

Answer 3

Law of partial pressure, when you go down N2 goes up

Question 4

Boyles law

Answer 4

Pressure increases as volume decreases, why you never hold your breath

Question 5

Archemedy’s Principle

Answer 5

1 cubic foot of seawater equals 64 pounds, so if an object is 60 pounds it will float, 70 pounds will sink

Question 6

First aid for DCS or a lung expansion injury

Answer 6

1st aid: 100% pure oxygen, Treatment: chamber

Question 7

1 bar equals

Answer 7

14.7 psi, 1 atmosphere, 33 ft under water, 1400 pounds of pressure

Question 8

Boyles law + balloons

Answer 8

Balloon: 1/2 the size at 33 ft with 29.4 psi, 1/3 the size at 66 ft with 44.1 psi, 1/4 the size at 99 ft with 59.6 psi