(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Hi, I need some help with a homework assignment I have, the scenario is as follows:

The Saudi Arabian government has decicded to look into towing a large iceberg from Antarctica to solve problems with low water supply. As their top physics advisor, you are to explore the plausability of such a proposal.

2. Relevant equations

Not Sure, Q=MC∆Tand MLf?

3. The attempt at a solution

I have researched into tugboats, and found a tugboat capable of pulling a 250 000 ton ship at 7.4km/h (4 knots). I have decided for simplicity's sake to ignore the extra drag an iceberg would produce. For the same reason, I have ignored the lightening of the mass as the iceberg melts. This is because I do not understand the physics required to find the pulling force or the tugboat given the HP, and I don't believe I am expected to for the purposes of this task.

I have constructed a path based on water currents and water temperature, and have split it into 11 sections, calculating the water temperature of each section, and the time taken to complete each section.

Section A: 200 hours @2°C

Section B: 88 hours @5°C

etc.

I just need help applying time into the equation. The initial temperature of the ice is -30°C, so I will need something along the lines of:

Q=MC∆T(ice)+MLf(Ice/Water)

I assume perhaps the solution will have something to do with Watts (J/s), as have previous questions I've Had to do, Im just not sure how to apply this.

Any Help Would Be greatly appreciated

Thankyou, Ashley Gillman

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# Homework Help: Ice melting in water over time?

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