1 psi is equal to how many pascals?

1 psi is equal to how many pascals?

• A. 6894.757 pascals
• B. 5000 pascals
• C. 1000 pascals
• D. 689.4757 pascals

Answer: (A)

The concept is converting pressure from psi (pounds per square inch) to pascals (newtons per square meter). One psi means one pound-force acting on one square inch. Convert the units: 1 pound-force equals 4.4482216 newtons, and 1 square inch equals (0.0254 meters)^2 = 0.00064516 square meters. So 1 psi = 4.4482216 N / 0.00064516 m^2 ≈ 6894.757 pascals. Therefore, 1 psi is about 6894.757 pascals (roughly 6.895 kPa). The other options either correspond to a tenth of this value (0.1 psi ≈ 689.4757 Pa) or are approximations to different pressures (e.g., 5000 Pa ≈ 0.726 psi, 1000 Pa ≈ 0.145 psi), which is why they’re not correct.

The concept is converting pressure from psi (pounds per square inch) to pascals (newtons per square meter). One psi means one pound-force acting on one square inch. Convert the units: 1 pound-force equals 4.4482216 newtons, and 1 square inch equals (0.0254 meters)^2 = 0.00064516 square meters. So 1 psi = 4.4482216 N / 0.00064516 m^2 ≈ 6894.757 pascals. Therefore, 1 psi is about 6894.757 pascals (roughly 6.895 kPa). The other options either correspond to a tenth of this value (0.1 psi ≈ 689.4757 Pa) or are approximations to different pressures (e.g., 5000 Pa ≈ 0.726 psi, 1000 Pa ≈ 0.145 psi), which is why they’re not correct.