Maths-

General

Easy

Question

# A Submarine descends to of its maximum depth. Then it descends another of

its maximum depth. If it now at 650 feet below sea level , What is its maximum depth

Hint:

### Form the equation using the given information.

○ Take variable quantities as x.

## The correct answer is: Hence, the maximum depth is 780 feet.

### Answer

- Step-by-step explanation:

○ Given:

First submarine descends to of its maximum depth.

Then it descends another of its maximum depth.

The height below sea level is 650 feet.

○ Step 1:

Let the maximum depth be x feet.

So,

At first, submarine descends = x feet.

Then, submarine descends = x feet.

Total descend = x + x feet

Total descend = x + x feet

Total descend = x feet

It is given that, height below sea level; is 650 feet

∴ x = 650

5x = 650 × 6

5x = 3900

x =

x = 780

- Final Answer:

Hence, the maximum depth is 780 feet.

Depth is the actual distance of an object beneath the surface, as measured by submerging it with a perfect ruler. The depth of an object in a denser medium as seen from a rarer medium is referred to as apparent depth in a medium. Its value is less than the true depth.

A formula for calculating ocean depth. D = V divided by 1/2 T D stands for depth (in meters) T= Time (in seconds) V = 1507 m/s (speed of sound in water) (speed of sound in water)

Since the speed of sound in water is known, the depth "d" is determined using the straightforward equation "d/2 = vt."

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