What is the pressure in psi gauge at 2 atmospheres?

What is the pressure in psi gauge at 2 atmospheres?

• A. 10 psi
• B. 15 psi
• C. 30 psi
• D. 45 psi

Answer: (B)

To determine the pressure in psi gauge at 2 atmospheres, it is important to understand the relationship between atmospheric pressure and psi. One atmosphere is defined as 14.7 psi. Therefore, at 2 atmospheres, the calculation to find the pressure in psi gauge is: 2 atmospheres x 14.7 psi/atmosphere = 29.4 psi. When measuring pressure in psi gauge, the atmospheric pressure is not included because gauge pressure is often relative to atmospheric pressure. Thus, you round 29.4 psi to approximately 30 psi. The answer of 15 psi does not accurately represent the conversion from atmospheres to psi. Instead, the closest answer representing the pressure at 2 atmospheres would be 30 psi, highlighting a key understanding of pressure conversion between different units and distinguishing between absolute and gauge pressure.

To determine the pressure in psi gauge at 2 atmospheres, it is important to understand the relationship between atmospheric pressure and psi. One atmosphere is defined as 14.7 psi. Therefore, at 2 atmospheres, the calculation to find the pressure in psi gauge is:

2 atmospheres x 14.7 psi/atmosphere = 29.4 psi.

When measuring pressure in psi gauge, the atmospheric pressure is not included because gauge pressure is often relative to atmospheric pressure. Thus, you round 29.4 psi to approximately 30 psi.

The answer of 15 psi does not accurately represent the conversion from atmospheres to psi. Instead, the closest answer representing the pressure at 2 atmospheres would be 30 psi, highlighting a key understanding of pressure conversion between different units and distinguishing between absolute and gauge pressure.