Current Density: Homework Statement & Stuck Solution

Thread starter j-lee00
Start date Apr 4, 2011
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Current Current density Density

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The discussion revolves around a homework problem related to current density, with participants expressing confusion about the solution process. One user indicates they are stuck and seeks guidance on where to proceed next. Another participant suggests that the problem appears to be a straightforward plug-in issue. The conversation highlights the need for clarification on specific steps in the solution. Overall, the thread emphasizes collaborative problem-solving in understanding current density concepts.

Apr 4, 2011

j-lee00

Homework Statement

In attachment

The Attempt at a Solution

I'm stuck.

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Apr 4, 2011

SammyS

Staff Emeritus

Science Advisor

Homework Helper

Where are you stuck?

What have you tried?

It looks like a fairly straight forward plug in problem.

Apr 5, 2011

j-lee00

yep sure is

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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