Home / Questions / A salvage operation is underway to raise a sunken frigate of mass M from a depth H on theo...
A salvage operation is underway to raise a sunken frigate of mass M from a depth H on theocean floor. This is to be accomplished by attaching a floatation device (an inflatable balloon in this case) to the frigate and filling it with air pumped down from the surface. The density of the ocean water can be assumed constant and equal to ?w and the average density of the materials of which the frigate is composed is ?f (>?w). The air in the balloon can be treated as an ideal gas(gas constant R) and is in good thermal contact with the ocean water at temperature T. The mass of the balloon is Mb and the volume of the materials from which it is made is Vmb. You may assume that even when fully inflated, the vertical dimension of the balloon is small compared to H, and that the air pressure equals the water pressure at the same depth. a) What is the volume of the balloon, Vb at the instant the frigate begins to rise from the ocean floor? You may neglect the gravitational forces on the gas in the balloon. b) Find an expression for the mass of air, Mair, that has been pumped into the balloon for the conditions in part a). (Hint: Ideal gas law is PV = mRT where m is the mass of an ideal gas) c) Will it be necessary to add air to the balloon as it rises, in order to bring the frigate to thesurface? Why or why not? Page
Jun 19 2020 View more View Less
Think of an industry that pollutes the water and has access to variable technology for reducing that pollution. Graphically illustrate and explain the impact of each of t...
Nov 09 2017Chapter 12 Quiz - MRP & ERP O Saved Help Save & Exit Submit Problem 12-2 The following table lists the components needed to assemble an end item, lead times, and quantiti...
Aug 28 2020If you deposit $100,000 in a bank savings account that pays 3.5% with annual compounding of interest, how much money will be in your account after 5 years?
Aug 17 2020“I can’t understand what’s happening here,” said Mike Holt, president of Severson Products, Inc. “We always seem to bid too high on jobs that require a lot of labor time ...
Jul 01 2020Marcin and Adam both consume the same goods in a pure exchange economy. Marcin is originally endowed with 18 units of good x and 14 units of good y. Adam is originally en...
May 11 2020Describe two reasons why the definitions of learning disabilities have been so varied.2. Describe two strategies that could be used by a general education ...
Dec 14 2019With its current levels of input use, a firm's MRTS is 1/3 (when capital is on the vertical axis and labor is on the horizontal axis). This implies A. the firm conld ...
Mar 13 2020Select the correct statement about the Defense Federal Acquisition Regulation Supplement (DFARS) clause 252.234-7001, Notice of Earned Value Management System (EVMS). A. ...
Aug 10 2020What is the present value of Rs. 6000 receivable after two years at a discount rate of 5% under continuous discounting? [A]Rs. 5429.02 [B]Rs. 6000 [C]Rs. 5700 [D]Rs. 6300
Jan 03 2018