A Circular Window 30 Cm in Diameter in a Submarine

Multiple Choice

A circular window 30 cm in diameter in a submarine can withstand a net maximum force of $5.20 \times$ $10 ^ { 5 } \mathrm {~N}$ without damage. What is the maximum depth in a fresh-water lake to which the submarine can go without damaging the window? The density of fresh water is $1000 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

A) 1200 m
B) 750 m
C) 740 m
D) 680 m