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Juliette [100K]
3 years ago
14

Which have different numbers of electrons?

Physics
1 answer:
nexus9112 [7]3 years ago
6 0

Answer:

isotopes

Explanation:

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A battery is used to charge a parallel-plate capacitor, after which it is disconnected. Then the plates are pulled apart to twic
Igoryamba

Answer: C.

Explanation:

For a parallel-plate capacitor where the distance between the plates is d.

The capacitance is:

C = e*A/d

You can see that the distance is in the denominator, then if we double the distance, the capacitance halves.

Now, the stored energy can be written as:

E = (1/2)*Q^2/C

Now you can see that in this case, the capacitance is in the denominator, then we can rewrite this as:

E = (1/2)*Q^2*d/(e*A)

e is a constant, A is the area of the plates, that is also constant, and Q is the charge, that can not change because the capacitor is disconnected.

Then we can define:

K = (1/2)*Q^2/(e*A)

And now we can write the energy as:

E = K*d

Then the energy is proportional to the distance between the plates, this means that if we double the distance, we also double the energy.

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3 years ago
As a mercury atom absorbs a photon of
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<span> The failure of the anchovy harvest in 1972 was blamed on El Niño.</span>
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Calculate the total displacement if a toy car starts at 0 moves 5cm to the left then 8cm to the right then 3 cm to the left
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Please, Help!!
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Let, 1st force = a

2nd force = b

A.T.Q,

a+b = 10

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2 years ago
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