Question

How does the pressure exerted by a liquid change with the depth of the liquid? How...

  • How does the pressure exerted by a liquid change with the depth of the liquid?
  • How does the pressure exerted by a liquid change as the density of the liquid changes?
  • Discounting the pressure of the atmosphere, if you swim twice as deep in water, how much more water pressure is exerted on your ears?
  • In a deep dive, a whale is appreciably compressed by the pressure of the surrounding water. What happens to the whale’s density?
  • If water faucets upstairs and downstairs are turned fully on, will more water per second flow out the downstairs faucet? Or will the flows from the faucets be the same?

Homework Answers

Answer #1

Pressure exerted by the liquid is

            P = (density of water ) g h

Here, g is acceleration due to gravity and h is depth.

From the above formula pressure is proportional to the density of the liquid and depth.

As the depth increases, pressure increases.

Pressure exerted by the liquid increases as the density of the liquid increases.

Pressure exerted on ear is

       P = F / A

            = force exerted by the water on ear / area of ear

            = ( density of water ) (volume of ear) g / area of ear

----------------------------------------------------------------------------------------

The downward gravitatonal force is more than up ward buoyant force on the whale. so

      mg > ( densityo of water ) (volume of whale ) g

      density of whale is > density of water

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Part A) The air pressure above the liquid in figure is 0.488 atm . The depth...
Part A) The air pressure above the liquid in figure is 0.488 atm . The depth of the air bubble in the liquid is h = 37.9 cm and the liquid’s density is 847 kg/m3 . The acceleration of gravity is 9.8 m/s 2 . Part B) A ship sailing from the ocean into a fresh water harbor sinks slightly deeper into the water. How does the buoyant force on it change? 1. It doesn’t change at all. 2. It...
A bubble of 6.00 mol helium is submerged at a certain depth in liquid water when...
A bubble of 6.00 mol helium is submerged at a certain depth in liquid water when the water ( and thus the helium ) undergoes a temperature increase T of 20 C at constant pressure. As a result, the bubble expands. (a) How much heat Q is added to the helium during the expansion and temperature increase? (b) What is the change Eint in the internal energy of the helium during the temperature increase? (c) How much work W is...
Question 1 The pressure in a liquid is: A) independent of the depth B) linearly proportional...
Question 1 The pressure in a liquid is: A) independent of the depth B) linearly proportional to the depth C) proportional to the 3rd power of depth D) inversely proportional to the depth E) proportional to the 2nd power of depth Question 2 The reason for floating of some objects in water is due to: A) First law of thermodynamics. B) Archimedes’ principle. C) Hydrogen bond. D) Einstein Energy principle.    E) Earth magnetic poles. Question 3 The reason for...
1. How does the vapor pressure of a compound change with the temperature of the surrounding...
1. How does the vapor pressure of a compound change with the temperature of the surrounding environment? 2. What is the mole fraction of each component if 10 mL ethyl acetate is dissolved in 50 mL toluene? 3. When hearing a 50:50 mixture of miscible liquid compounds whose boiling points are significantly different, what is the composition of the vapor above the liquid? A. It is a 50:50 Mixture B. It is a mixture enriched in the component that had...
QUESTION Why does air pressure decrease with increasing altitude? (Select all that apply.) A) The weight...
QUESTION Why does air pressure decrease with increasing altitude? (Select all that apply.) A) The weight of the air above is smaller. B) Colder air is less dense. C) The weight of the air below is smaller. D) Less air above pushes down. E) There is more air below to push up more strongly. F) Hot air rises. PRACTICE IT Use the worked example above to help you solve this problem. In a huge oil tanker, salt water has flooded...
3.9 Apply the grid method (p. 11) to each situation. a. What is the change in...
3.9 Apply the grid method (p. 11) to each situation. a. What is the change in air pressure in pascals between the floor and the ceiling of a room with walls that are 8 ft tall. b. A diver in the ocean (S 1.03) records a pressure of 2 atm on her depth gage. How deep is she? c. A hiker starts a hike at an elevation where the air pressure is 940m bar, and he ascends 1200 ft to...
Vocean= volume of ocean Docean  = volume of ocean A) The total volume of Titan’s lakes and...
Vocean= volume of ocean Docean  = volume of ocean A) The total volume of Titan’s lakes and seas was recently estimated to be 70,000 km3 of liquid methane. If this volume was spread across all of Titan into a global ocean (ignore any surface topography for the remainder of this question), how deep would that global ocean be? The volume of a global ocean can be approximated by its depth multiple by the surface area of the moon (Vocean = Docean...