Question

What is the absolute pressure on a diver at 92' / 28m of salt water?

1) 3.8 ata/bar
2) 3.6 ata/bar
3) 3 ata/bar
4) 2.8 ata/bar

Answer 1

The absolute pressure on a diver at 92 feet (28m) of salt water is approximately 3.8 ATA, which is calculated by adding the pressure from the water depth and the atmospheric pressure at sea level.

Step-by-step explanation:

To calculate the absolute pressure on a diver at 92 feet (28m) of salt water, we need to consider both the pressure from the water and the atmospheric pressure at sea level. Since every 33 feet of salt water equates to an increase of 1 ATA, and we know there is 1 ATA from the atmosphere, we first divide the diver's depth by 33 feet:

92 feet ÷ 33 feet/ATA = 2.79 ATA (from the water depth)

We then add the atmospheric pressure:

2.79 ATA (water) + 1 ATA (atmosphere) = 3.79 ATA

The absolute pressure on the diver is therefore approximately 3.8 ATA. As it is not an exact number, we round it to the closest answer provided, which is option 1) 3.8 ata/bar.