Greetings,
A friend of mine is taking a scuba class and is struggling on the math part so I offered to help her. She's taking a NAUI ow class and since I'm a NAUI MSD, I figured I could help. So I looked at her quiz and I had no idea that they taught OW classes with all these gas volume and PSI related trivia. There's question in particular that has me truly stumped. I was wondering if someone can explain to me how the answer (given the choices) can be derived. You don't need to provide the answer, just a clue how to derive it.
Q: A diver makes a dive to 75 ft. and stays there for 32 minutes. the tank pressure at the beginning of the dive was 3000 PSI and at the end of the dive there is only 500 PSI in the tank. What is the approximate surface air consumption rate for this diver:
A) 2800 ft/sec.
B) 2200 ft/sec.
C) 4800 ft/sec.
D) 1800 ft/sec.
This question (or provided answers) just doesn't make sense to me. What is it that I'm missing?
A friend of mine is taking a scuba class and is struggling on the math part so I offered to help her. She's taking a NAUI ow class and since I'm a NAUI MSD, I figured I could help. So I looked at her quiz and I had no idea that they taught OW classes with all these gas volume and PSI related trivia. There's question in particular that has me truly stumped. I was wondering if someone can explain to me how the answer (given the choices) can be derived. You don't need to provide the answer, just a clue how to derive it.
Q: A diver makes a dive to 75 ft. and stays there for 32 minutes. the tank pressure at the beginning of the dive was 3000 PSI and at the end of the dive there is only 500 PSI in the tank. What is the approximate surface air consumption rate for this diver:
A) 2800 ft/sec.
B) 2200 ft/sec.
C) 4800 ft/sec.
D) 1800 ft/sec.
This question (or provided answers) just doesn't make sense to me. What is it that I'm missing?