A scientist named Gunjan made a submarine which travelled at a speed of nautical miles per hour. Il Gunjan decides to cross a part of the Pacific Oceano di 4700 miles by the submarine, how much time will the joumey taker na = 1.1507 mile)
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Answer:
1. Problem
One cool morning in the Atlantic, as the fog clears, a destroyer and an enemy submarine suddenly spot each other at the distance of 3 nautical miles. The submarine dives immediately, her captain chooses a random direction and sails straight at his maximal speed of 10 knots (1 knot=1 nautical mile per hour) at some fixed depth, not very deep. (The captain of the submarine just follows the instructions; when submerged he has no means to find out where the destroyer is.)
The captain of the destroyer, whose maximal speed is 20 knots, also acts according to his manual: to follow a path which will bring him for sure to a position strictly above the submarine. (In such position he can detect the submarine with his acoustic device, and release his depth charges upon it. The acoustic submarine detector has very limited range.) The destroyer captain knows* of the submarine's tactic and her maximal speed. The only thing he does not know is the random direction chosen by the submarine's captain.