The pressure inside a commercial airliner is maintained at 1 atm (1.01 × 105 N/m2). What is the outward force exerted on a 1.0 m × 2.0 m cabin door if the outside pressure (at 10-km height) is 0.3 atm?
A. 1.4 × 102 N
B. 1.4 × 103 N
C. 1.4 × 104 N
D. 1.4 × 105 N
E. 7.0 × 103 N
Answer: D
Physics & Space Science
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