Question

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Answer 1

Answer:

Given:

2 divers are made to dive in River water at different depths. Later they are made to dive in Sea.

To find:

• Who will experience more pressure in River?
• Why will they experience more pressure in Sea at the same Depth?

Concept:

Pressure experienced at a depth of h is given as follows :

$\: \: \: \: \: \: \: \: \: \: \: \: \: \boxed{ p = \rho \: \times g \: \times h}$

ρ = density of water

g = gravity

h = height

Following this Equation, we can easily say that Diver B will experience more pressure as his depth (h2) is more than that of Diver A (h1)

2nd question:

At the same Depth, the divers will experience more pressure in the sea because the density od sea water is higher than that of River water. This is because Sea water contains ionic salts which increase their density (ρ is increased)

Answer 2

Answer:

The general thumb rule for Fluid Dynamics is that :

Higher the depth corresponding to higher pressure experienced. This is because a higher column of water exerts pressure.

So , Diver B will get more pressure.

Again another rule is that :

Higher the density (more solute content in sea) corresponding to higher pressure.

So both the divers experience more pressure in Sea.

$hope \: this \: helps.......$