Which of the following is the proper set of conversion factors for changing lb/in² to pascals? (Hint: A pascal is a unit of force equal to 1 N/m².) A) (1 lb/4.45 N)(1 m²/1550 in²) B) (4.45 N/1 lb)(1 m²/1550 in²) C) (1 lb/4.45 N)(1550 in²/1 m²) D) (4.45 N/1 lb)(1550 in²/1 m²) E) (1 lb/4.45 N)

Question

Quizplus · Accepted Answer

To convert lb/in² to pascals, we need to multiply by conversion factors that cancel out the units of lb and in² and introduce the units of N and m². We know that 1 pascal is equal to 1 N/m², so we should use the conversion factors (4.45 N/1 lb) and (1 m²/1550 in²) to cancel the lb and in² units and introduce the N and m² units. Thus, the proper set of conversion factors is (4.45 N/1 lb)(1550 in²/1 m²), which simplifies to (4.45 N/1 lb)(1550/1) m² = 6895 N/m² or 6895 pascals. Therefore, choice D is the correct answer.

Which of the Following Is the Proper Set of Conversion