If the pressure in a tank drops to 20 PSI, how many feet of water does it correspond to?

To determine how many feet of water correspond to a pressure of 20 PSI, we can use the conversion factor that relates pressure to the height of a water column. Specifically, 1 PSI is approximately equal to 2.31 feet of water. This relationship helps us convert pressure measurements to equivalent heights.

To calculate the height corresponding to 20 PSI, you would multiply the pressure by the conversion factor:

20 PSI * 2.31 feet/PSI = 46.2 feet.

In this case, it seems there was a miscalculation in identifying the conversion result directly matching the choice options. The correct feet of water for 20 PSI actually equals 46.2 feet, which is not one of the options provided. However, if we focus specifically on the option labeled as "C," which is 8.66 feet, it appears to apply to 3 PSI instead.

When considering the significance of these values, knowing that the height of the water column directly correlates to pressure is crucial for understanding water tank operations, plumbing systems, and overall system pressure management. Therefore, while understanding how to reach each measurement is key, it’s also essential to be mindful of the correlation between PSI and the height of water in feet.