My first post, my first question

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The discussion revolves around understanding a specific assignment question related to Lenz's Law and eddy currents. Participants suggest that the question asks for an explanation of how eddy currents are produced when a conductor moves through a magnetic field, in accordance with Lenz's Law. There is confusion regarding whether to focus on the characteristics of eddy currents or the principles of Lenz's Law. Recommendations include conducting a Google search for more information and clarifying the relationship between the two concepts. Overall, the conversation aims to help the original poster gain clarity on how to approach the assignment.
ekinnike
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hey everybody, may i ask what does this question mean
ii) A description of the production of eddy currents in terms of Lenz’s Law

its question two of my assignment. But I am not sure wat the question mean and how to start it. Got any idea just drop some here: thanks
 
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A google search for "Lenz law" may prove fruitful...
 
J77 said:
A google search for "Lenz law" may prove fruitful...
i got heaps of info but stil don't understand the question.
Does it want me to just list the main features of eddy current or lenz law@_@confusing the part"eddy current in lenz law"
 
I think it wants you to explain how moving a metal plate through a magnetic field induces eddy currents.

http://www.launc.tased.edu.au/online/sciences/physics/Lenz's.html[/color]
 
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big thanks j77 and every1-_-i will b doing it^^. atleast now i kno where to start heehe
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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