Question

h) There is no change of either mass or atomic numbers between parent nucleus and daughter nucleus Ultra-high pressure hydro-blasting may be used for industrial cleaning, surface preparation, and cutting applications. The water jets generate sufficient energy to exceed bonding energies of even the most adherent scales, coatings, or process contamination. The technology also provides a safe, cold cutting alternative to conventional oxyacetylene cutting methods. One commercially-available system has an operating pressure of 40,000. PSI. What is this pressure in kilopascals? [3 points)

Answer 1

Q18. Pressure = 40000 psi = 40000 lb/in²

conversion factors

1 lb = 0.4536 kg

1 in = 2.54 cm

1 cm = 0.01 m

Pressure = (40000 lb/in²) * (0.4536 kg / 1 lb) * (1 in / 2.54 cm)² * (1 cm / 0.01 m)²

Pressure = (40000 lb/in²) * (703.08 kg-in² / lb-m²)

Pressure = 2.81 x 10⁷ kg/m²

Pressure = 2.81 x 10⁷ Pa

Pressure = 2.81 x 10⁷ Pa * (1 kPa / 1000 Pa)

Pressure = 2.81 x 10⁴ kPa