# Raising a yacht by attaching filled air bags to it

Not what you're looking for?

A large yacht has a mass of 305 tonnes. The yacht sinks and is lying on the sea bed at a depth of 40m. It is estimated that the volume of teh yacht is such that it displaces 0.8m3 of water when it is totally submerged under water.

A salvage team decides to raise the yacht to the surface by fixing large bags to the yacht and filling the bags with air. The total mass of the empty bags is 100kg.

Determine

A) The volume that the air filled bags will need to be so that the yacht and bags system is exactly balanced, (it doesn't rise to the surface, but doesn't sink back to the sea bed)

b) The number of moles of air needed to fill the bags to the required volume.

Data: temperature of sea water is 10 degrees celcius

Density of sea water is 1030 kg/m3

Universal gas constant = 8.31 j/mol K

ATMOSPHERIC PRESSURE AT THE SURFACE OF THE SEA = 1.013 X 10 to the power of 5 N/m2

(assume the mass of air is negligible. also assume that teh volume of the empty bags with no air in is negligible.)

##### Purchase this Solution

##### Solution Summary

The solution provides good explanations, formulas and calculations to arrive at the answers.

##### Solution Preview

A.)

mass o f yacht = 305 tonnes = 305000 kg

volume of yacht = 0.8 m^3

let the volume of bags = V m^3

therefore,

volume of the water displaced by bags+yacht = V + 0.8 m^3

mass of the water displaced by bags + yacht ...

###### Education

- BEng, Allahabad University, India
- MSc , Pune University, India
- PhD (IP), Pune University, India

###### Recent Feedback

- " In question 2, you incorrectly add in the $3.00 dividend that was just paid to determine the value of the stock price using the dividend discount model. In question 4 response, it should have also been recognized that dividend discount models are not useful if any of the parameters used in the model are inaccurate. "
- "feedback: fail to recognize the operating cash flow will not begin until the end of year 3."
- "Answer was correct"
- "Great thanks"
- "Perfect solution..thank you"

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

##### Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

##### Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

##### The Moon

Test your knowledge of moon phases and movement.

##### Basic Physics

This quiz will test your knowledge about basic Physics.