- #1

gillwoman

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## Homework Statement

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.

## Homework Equations

Not Sure, Q=MC∆Tand MLf?

## 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 lightning 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.

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, I am just not sure how to apply this.

Any Help Would Be greatly appreciated

Thankyou, Ashley Gillman