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zimovet [89]
3 years ago
13

A disk with a hole has inner radius rin and outer radius rout. the disk is uniformly charged with total charge q. find an expres

sion for the on-axis electric potential at distance z from the center of the disk

Physics
1 answer:
Effectus [21]3 years ago
3 0
Here it is.  I used the surface charge density σ as q/Area, and then wrote it out in terms of q at the end

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A rigid tank internal energy of fluid 800kJ. Fluid loses 500kJ of heat and padle wheel does 100kJ of work. Find final internal e
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Answer:

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Explanation:

Given that

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Sign -

1.Heat rejected by system - negative

2.Heat gain by system - Positive

3.Work done by system = Positive

4.Work done on the system-Negative

Lets take final internal energy =U₂

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