A torpedo is launched underwater, targeting a naval vessel about 5,000 m away. How can the vessel detect the torpedo before it reaches the vessel?

Select one:
a. By seeing it flying above the water
b. By listening for it underwater
c. None of the above: it won’t be able to detect it in time.
d. By listening for it in the air

3 answers

SONAR ...
by listening for it underwater
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